Venice's Urban Evolution
Venice's Urban Evolution
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Author: Armando Cepeda Guedea, master’s degree in urban planning at Universidad Nacional
Autónoma de México
Abstract
The city is always a changing object which adapts to its society and economic needs. In the last 70
years the city of Venice has passed a transformation, from an overpopulated industrial city, to a
city totally dependent on tourism with a population in continuous decline. Thus, with a documental
and photographic review from the urban - architectural angle, gives a perspective on how the
touristification can change the function of buildings and even the urban structure of a city.
depopulation
Resumen
La ciudad es siempre un objeto cambiante que se adapta a su sociedad y necesidades económicas. En los
últimos 70 años, la ciudad de Venecia ha pasado por una transformación, de una ciudad industrial sobre
poblada, a una ciudad totalmente dependiente del turismo con una población en continuo declive. Así, con
una revisión documental y fotográfica desde el ángulo urbano - arquitectónico, se consigue una perspectiva
de cómo la turistificación puede cambiar la función de los edificios e incluso la estructura urbana de una
ciudad.
despoblación
Introduction
The present study aims to present how the buildings in the city of Venice and the urban structure
in Venice was adapted from an industrial city in the first half of the XX century to a touristic center
nowadays. The changes can be spotted in almost every part of the city, in where former factories
are transformed into schools or hotels, or antique Venetian palaces transformed into museums,
touristic housing or commercial stores. The urban structure has also changed with new urban
facilities focused on tourism creating new centralities by their own. This changes provoques a
constant reduction on the local population, where the original city center is no longer inhabited
because the high prices of the properties in that area. The study wants to point the effects of mass
tourism in this historic city from the architectonic and urbanistic perspective.
The city of Venice is located in northeast Italy in the shallow of the Venetian Lagoon, it lies over
118 islands separated by channels which are linked by 400 bridges1. The city can only be traveled
by foot or boat, making a unique case in modern cities where cars and its roads are key elements
in a city configuration. The Historic Center of Venice is declared UNESCO World Heritage Site
with many buildings with high historical value, which makes it an attractive destination for tourists
The Historic Center of Venice forms part of the municipality of Venice that includes the other
islands of the Venetian Lagoon such as Lido, Murano, Burano and Torcello for example, and the
mainland cities of Mestre, Marguera and Favaro2, up to 1950’s, the Historic Center of Venice was
1
 The surface of Venice according the Commune di Venezia is 797.96 ha
2
 The municipality of Venice was established in 1923, before that Mestre, Favaro, Burano, Murano, Pellestrina,
Chirignago and Zelarino were independent municipalities
the main urban center of the municipality, but this has changed and nowadays Mestre is the real
The Historical Center of Venice due to its geographical condition is vulnerable to flooding, each
year in autumn and spring the high tide known in Venice as “acqua alta” appears causing some
years damage to the buildings and provoking the evacuation of the population of certain areas in
the city. 1966 was the year when the high tide (1.96m) reached its peak causing a damage on
History
The origins of the city of Venice can be traced to 452 AC when the inhabitants of the inland roman
city of Altinum escaped from the hun invasion and decided to establish a settlement in the islands
of the Venice Lagoon. In the early stages the city was under Byzantine domain, leaving a strong
influence in the later architecture. The city became the capital of the Republic of Venice (697 AC-
1797 AC), by the late middle ages and the renaissance the city was one of the maritime powers in
the Mediterranean and an economic center, as a matter of fact by the 14th century the city was
considered as one of the first financial centers in Europe. The city suffered a slow period of
decadence as consequence of the dominance of the east Mediterranean by the Ottoman Empire
blocking the commercial routes that one day made Venice one of the greatest powers in Europe.
The end of the republic of Venice came in the year of 1797 AC, when the troops of Napoleon took
the city making the last Dogo resign. In the second half of the 19th century the city began to grow
with the arrival of the train connecting the city with the mainland (1846 AC) transforming the city
into and industrial center. Until the first half of the 20th century the city remained as an industrial
center, in the following years the city lost influence and importance in favor of the mainland cities
The city of Venice was builded mostly over alluvial mud, in order to support the all the churches
and Venetian palaces, the inhabitants of Venice developed a system of timber piles driven into
mud that with the pass of the time harden to form a strong foundation and support the Venetian
The most characteristic architectonic style in the historic center of Venice is the Venetian Gothic
a variant of the Italian gothic with influence of the Byzantine and Arab architecture, as
consequence of the intense trade with the eastern world. The most important exponent of this style
is the Doge’s Palace with the characteristic ogee arches and the particular rose windows that are
very present in the other Venetian palaces, despite the numerous fires and remodelation the Ducal
Palace preserve the same exterior style as 1340 AD, other important exponents of this style are
Ca’ d’Oro (1432 AD) and Ca’ Foscari (1453 AD), this two palaces have their facades facing the
Grand Canal.
3
 John Roloff, Venice Substructure Complex (Venice: Emily Harvey Foundation, 2016),
https://www.johnroloff.com/Roloff_VSC2.pdf (Consulted 10-06-2020)
Figure 1: Facade of the Ducal Palace
Font: Armando Cepeda Guedea (2018)
In the Renaissance was also a time of flourishing of the architecture with important buildings as
the Procuratie (1640 AD) designed by Scamozi, in the High Renaissance the head architect of
Venice was Andrea Palladio who published The Four Books of Architecture (1570 AD) , which is
treatise on architecture that served as a guide of the principles of architecture, that nowadays is
because the city was free of bombardments due to an agreement between the Germans and Allies,
causing a change in the natural demographics of the city. After the war Venice continued to receive
migrants mainly form the countryside seeking for jobs opportunities4, until 1951 the population in
the Historic Center of Venice was growing, thereafter the population of Venice has only decreased.
By the beginnings of the 1950’s the city had an important industrial activity but with clear signs
of decline and even disappearance. In 1951 three big factories were still operating in Venice, the
Navy arsenal factory was employing nearly 3,000 civil employees, the Molino Stucky with 500
workers by the time. Also, the Italian Navy Command of the Adriatic was still in Venice,
4
  In the 1950’s decade the Italian economic miracle happened, marking a shift in the economics of the country, from
a mainly agricultural economic by the baggings of the decade, to a mainly industrial economic by the beginnings of
the 1960’s. Cohen, Jon, and Giovanni Federico. “An Economic Miracle? Italy in the Golden Age, 1945–1960.”
Chapter. In The Growth of the Italian Economy, 1820–1960, 87–106. New Studies in Economic and Social History.
Cambridge: Cambridge University Press, 2001
generating jobs and a constant source of population, and the Cotonificio, a fabric factory
In 1952 for the first time the flow of goods in the port of Venice (5,091,814 tons) was superior
than 1939 (4,599,176) before the war, this increase can be understood due the increasing demand
of petroleum, because the commercial flow in 1952 (1,421,841) was still below the times before
Venice by the beginnings of the 1950’s decade regains its place as a cultural center, with the return
of the important cultural events as the Venice Biennale and the Venice Film Festival in Lido at
full capacity, increasing the touristic activity in the city. In the 1950’s the tourism was not yet
massified but the signs of the future touristification were begging to appear, for example in 1950
for the first time the non-Italian tourists (278,875) surpassed the local ones (226,180)6. It can be
considered that the 1950’s was the decade were the touristification process of the historical center
of Venice began.
Since the 1930’s the mainland cities of Mestre and Marguera began to develop its own industrial
centers, until the first half of the 1950’s Venice retained its position as the main industrial center
and the most populated city of the municipality, but by the second half of the 1950’s the industrial
activity began to disappear and the population began an exodus to Mestre and Marguera.
5
  Leopoldo Pietragnoli, Maurizio Reberschak, L'ottocento e il novecento 3 - La citta e il territorio nell'ultimo
novecento: DALLA RICOSTRUZIONE AL 'PROBLEMA' DI VENEZIA (Venice: Treccani, 2002),
http://www.treccani.it/enciclopedia/l-ottocento-e-il-novecento-3-la-citta-e-il-territorio-nell-ultimo-novecento-dalla-
ricostruzione-al-problema-di-venezia_%28Storia-di-Venezia%29/ (Consulted 12-06-2020)
6
  Leopoldo Pietragnoli, Maurizio Reberschak, L'ottocento e il novecento 3 - La citta e il territorio nell'ultimo
novecento: DALLA RICOSTRUZIONE AL 'PROBLEMA' DI VENEZIA (Venice: Treccani, 2002),
http://www.treccani.it/enciclopedia/l-ottocento-e-il-novecento-3-la-citta-e-il-territorio-nell-ultimo-novecento-dalla-
ricostruzione-al-problema-di-venezia_%28Storia-di-Venezia%29/ (Consulted 12-06-2020)
In 1954 due to the reduction of working hours and layoffs in the factory the workers of the Mulino
Stucky began a big strike in Venice, the factory finally closed activities in 1955. In 1956 the Italian
Navy Command of the Adriatic, left Venice and was relocated in Ancona and by 1957 the
industrial activity of the Navy arsenal ended, finally in 1960 the last big factory in Venice the
Venice in 1951 reached its peak population with 175,000, 55.4% 7 of the population of the
municipality was still living in the Historical Center, meaning that Venice was by the time the
7
 Comune di Venezia, Serie storica della popolazione residente nel Comune di Venezia, (Venice: Comune di
Venezia, 1999), p. IX.
main center of the municipality. Over the next years the Historic of Venice began to lose
population in favor of the main land settlements of Mestre, Marguera and Favaro, searching for
Community Population %
Font: Author’s elaboration with data of Relazione sugli aspetti dinamici della demografia veneziana e sui censimenti
The housing conditions in Venice was one of the reasons the inhabitants of the city began an
exodus to mainland cities, mainly to Mestre. In 1951 there were 47,586 families in 33,502
households, meaning that the average Venetian family was composed by around 4 members, today
the average family in Venice is composed by 3 members. In 1951 793 families occupied 675
inadequate houses oh which 391 didn’t had running water and 583 without an adequate drainage
system8.
The depopulation process of Venice can be divided in two periods, Exodus (1951-1971) and
Toristification (1971-present), in the first period the depopulation was moved basically by
socioeconomic reasons, the city was overpopulated, the jobs on the island were disappearing and
the housing condition were not the optimal. The next table shows the depopulation process from
1951 to 2000.
8
 Renato Desidery, Relazione sugli aspetti dinamici della demografia veneziana e sui censimenti generali del 1961,
(Venice:n.e, 1962), p. 63.
Table 2. Depopulation of Venice
Font: Author’s elaboration with data of Dal sovraffollamento all’esodo: popolazione ed occupazione a Venezia nel
’900
In the second period called Toristification (1971-present), even though the housing condition are
much better than in the 1950’s, the price is constantly going up making every year more difficult
for the residents to remain in the city, also the housing offer is constantly decaying because the
original buildings for housing are transforming into building for commercial and touristic
purposes, other main reason of the constant depopulation in this period is the reduction or lacking
of services for the inhabitants of the city, such as parks, public libraries and grocery stores for
example. The next table shows the reasons why the residents of Venice want to leave the city9.
Table 3. Reasons the residents of the Historical Center of Venice want to leave the city
    Section              % Of residents who Too many tourists       Lack of services      Life has become too
                         have       thought                                               expensive
                         moving out
9
  The study divides Venice in 3 sections North, South and. Center. Dario Bertocchi and Francesco Visentin. “The
Overwhelmed City”: Physical and Social Over-Capacities of Global Tourism in Venice”, Sustainability 2019, no.11.
(2019), www.mdpi.com/journal/sustainability. (Consulted 11-06-2020)
  Venice North         22.37%                   27.44%                  29.04%                28.55%
Font: Author’s elaboration with data of The Overwhelmed City”: Physical and Social Over-Capacities of Global
Tourism in Venice
The Historic Center of Venice is traditionally divided in six “Quartiere” or districts, each one with
its own characteristics and numeration. The next map with data of “L'ottocento e il novecento 3 -
Cartoteca storica ISMAR-Venezia, shows a rough image of the main economic activities in the
The map shows how the industrial areas were distributed by the beginnings of the 1950’s. The area
of Santa Marta in the Santa Croce Sestiere is where a main industrial zone was located, its
geographical location near the port and the car bridge10 allowed the goods to be moved in an
efficient way, the Cotonificio and the Warehouses were located in that area. The artificial island
of Giudecca in the Dordoduro Sestiere was were the Mulino Stucky was located allowing a fast
transport of goods through the Giudecca channel, also a small shipyard was located in the island.
10
   The car bridge that connects Venice with the mainland is known as Ponte della Libertà builded in 1933, its length
is almost of 4km. Structurae, “Ponte della Libertà”, Structurae, https://structurae.net/en/structures/ponte-della-
liberta (Consulted 12-06-2020)
In the Castello Sestiere was were the navy factory of the Navy Arsenale was located, as seen in
the map it occupied a big area of the Historic Center. The Sestieres of San Polo and San Marco is
where the city center is located, the commercial activity and the small touristic industry was located
in that area. The Cannaregio Sestiere was were the main residential area of Venice was located,
nowadays the majority of the population of Venice still lives in Cannaregio, the train station of
Venice is located there and in the 1950’s a small warehouse area was located besides the train
In the period 1951-2019, the city of Venice lost 122,012 inhabitants representing a loss of 70% of
the population. The depopulation can be considered an effect of the touristification, the next table
shows the population changes in each Sestiere, showing that the effects of touristification doesn’t
Font: Author’s elaboration with data of The Overwhelmed City”: Physical and Social Over-Capacities of Global
Tourism in Venice
The table gave interesting interesting insights about the depopulation phenomena in Venice, in 11
years the population of the Historical Center of Venice reduced in 12%, as mentioned previously
the toursitification affects in different levels in each Sestiere. In the last 10 years the depopulation
was bigger in Castello with 15% of population reduction, showing that the urban transformation
where the housing is transformed into touristic accommodations and shops is currently being
developed in a bigger way in that area. The historic city center located on the San Marco Sestiere
is the most touristic zone of Venice were the Ducal Palace and the Saint Mark Basilica are located
and also is the second district that lost more population in the last 11 years with 13%, San Marco
is the less populated district and with the current tendencies in a few years the population of the
Sestiere will be residual. Aside the toursitification process, San Marco depopulation can be
explained due the vulnerability of the zone to the high tide “acqua alta” because is the lowest part
The Sestiere with the less population loss is Cannaregio, in fact in the last 10 years the district
gains 1% of population weight in the last 11 years, sustaining the condition as the most populated
The next maps with data of The Overwhelmed City”: Physical and Social Over-Capacities of
Global Tourism in Venice shows the concentration of beds for tourists and the concentration of
11
  According to the Municipality of Venice the high tide becomes perceptible in Saint Marks Square at 82cm, at Rialto
Bridge in San Polo at 95cm, finally in the railway station in Cannaregio the high tide becomes perceptible at 135cm
Figure 6: Concentration of touristic beds per Sestiere
Font: Author’s elaboration with data of The Overwhelmed City”: Physical and Social Over-Capacities of Global
Tourism in Venice
The biggest concentration of touristic beds 12 are located east of the Grand Canal in the Sestieres
of San Marco, Castello and Cannaregio with more than 10,000 beds per district. By the beginnings
of the 1950’s the east part of the city had a less concentration of industrial activity, and the
buildings with more historical value also are located in that side, so it can be considered that the
east side of the city is more touristic attractive than the west side. Making a comparison with the
depopulation in the last ten years, two of the Sesiteres with more touristic beds (Castello and San
Marco), are the ones who are losing more population, establishing a relation between
12
  The touristic beds are the ones located in hotels, Bed and Breakfasts and Touristic apartments with data of
http://dati.venezia.it/
touristification a population loss. The Sestieres of San Polo and Santa Croce are the one with the
less amount of beds, but by different reasons, San Polo is the smallest one with the less amount of
houses, so the quantity of beds is minor, in the case of Santa Croce an important surface of the
district is occupied by the port and the former industrial area of San Basilio/Santa Marta13.
The biggest concentration of shops and restaurants in the Historic Center of Venice is located in
the San Marco Sestiere the less populated district and with the most important buildings.
13
  The Municipality of Venice has a project (2014) of urban regeneration of the San Basilio/ Santa Marta zone,
including a tram line
According to Dal sovraffollamento all’esodo: popolazione ed occupazione a Venezia nel ’900 of
Giulano Zanon (2000), the Historic Center of Venice and in greater way the San Marco Sestiere is
The city's progressive "Disneyization" process continued vigorously, with the continuous
dropouts, closings, and transfers of the original businesses. On the other hand, mask and
pizza shops, ice cream parlors or fashion and clothing boutiques are constantly on the rise.
Finally, after a de facto liberalization of the planned use of buildings, which took place after
the recent approval of the Master Plan (2000), a process of expansion of tourist
accommodation began14.
In the last 70 years Venice passed from a overcrowded functional industrial city, to a city almost
converted into an attraction park, that every year makes more difficult to the inhabitants of Venice
Venice was not designed to be a touristic destination, so over the time the original Venetian
palaces, churches, factories, houses and other buildings began to adapt to the new reality. This part
will analyze the transformation of the most representative buildings of the Venetian industrial era,
to understand how the toursitification and a service-based economy changed the function of its
buildings.
The Port of Venice by the beginnings of the 1950’s was still and industrial and commercial port
but by that times the signs of the future touristification began to appear, nowadays the port serves
14
  Giuliano Zanon. “Dal sovraffollamento all esodo: popolazione ed occupazione a Venezia nel 900 of Giulano
Zanon”, Insula, no.4. (2000), https://www.insula.it/images/pdf/resource/quadernipdf/Q04-01.pdf. (Consulted 14-06-
2020)
almost only for touristic porpoise, In 2012 according to the Venice Port Authority 639 cruises
arrived in Venice that year, representing the 3.26% of the GDP of the Municipality15, nevertheless
the presence of big cruises in the island is causing a physical damage to the city, the big waves
generated by this big ships are damaging the old wood piles foundation of the city. A civic
movement launched by the inhabitants of the municipality with the collaboration of experts, is
trying to stop the entry of cruises in Venice, this can be seen as a response of the touristification
of the city by the local population. In the 1960’s the artificial island of Tronchetto16 in the port
area was created to fulfill the parking and docking needs for Venice, because of the especial
conditions of Venice that doesn’t allow the entrance to cars, making parking an important business
in the island, meaning that an entire island was created for touristic reasons.
The Mulino Stucky (1895-1955), a factory of flour and pasta that functioned for over 60 years
giving job to around 500 persons. Today the big factory that decorates the Giudecca Canal is a five
stars Hilton Hotel with 379 rooms17, the original red brick late 19th century eclectic facade was
preserved in order to maintain a continuity and preserve the urban image. The rustic industrial
interior was nor preserved and was replaced with luxury Venetian interiors18. One of the most
iconic elements of the hotel is the hidden roof pool, giving impressive views to its users. Even
though the hotel is a notable architectonic element, the print that around 1000 thousand tourists
15
   Autorità Portuaria di Venezia, L’IMPATTO ECONOMICO DELLA CROCIERISTICA A VENEZIA
(Venice:Autorità Portuaria di Venezia,
2013),https://www.port.venice.it/files/page/130705apvstudiocrocieristica_0.pdf (Consulted 15-06-2020)
16
   The island of Tronchetto was builded in 1964 with a surface of 18ha. Manfredo Nicoletti, Continuitá Evoluzione
Architettura, (Venice:Dedalo libri, 1978), p. 86.
17
   Hilton Hotels, Hilton Molino Stucky Venice, Hilton Hotels, https://www.hiltonhotels.com/es_XM/italia/hilton-
molino-stucky-venice/
18
   Jerzy Charytonowicz and Christianne Falcão, Advances in Human Factors in Architecture, Sustainable Urban
Planning and Infraestrcture, (Washington DC: Springer, 2019), p. 36.
Figure 8. The roof top of Mulino Stucky, on the left side the current view and on the right side the view from 1954
Font: booking.com (2020) and Fondo Mantovani (1954)
Besides the Mulino Stucky, a textile factory opened in 1919 named Fortuny still operates, but with
particular conditions, today the factory produce luxury fabrics with the elaboration techniques of
the early 20th century using the original machines19. Part of the factory was adapted to host a show
room were touristic visits can be scheduled, adapting the factory to the current touristic reality.
Also, the surrounding gardens that are property of the factory can be used for private and
corporative events. The Fortuny factory example shows how the businesses adapt to mass tourism
19
     The business also produce furniture and lighting
Font: fortuny.com (2016)
The Arsenale of Venice that until the second half of the 1950’s was a functional milirar factory,
with a navy command, today is the building is divided for multiple purposes. Half of the building
is still property of the navy and serves as a military school. Other part of the building serves as
museum, which is one of the biggest Navy museums20. An important part of the old Arsenale
serves as exposition space for the Fondazione la Biennale di Venezia. The Arsenale of Venezia
was an important military installation since the times of the Republic of Venice in the 15th century,
and in the last 70 years the place transformed into an exhibition place of an event that hosts around
Figure 10. The Arsenale, on the left side the current view and on the right side the shipyard view from 1950
Font: Comune di Venezia (2019) and Archivio Fotografico Giacomelli (1928)
The Cotonificio was a big textile factory close to the port of Venice in the Santa Marta area
employing around 1000 workers at its peak, the factory end its activities in 1960, the factory passed
through a transformation process becoming the main building of the Università Iuav di Venezia
with around 4000 students22. The adaptation of the building was big challenge, the interiors of the
20
   Città di Venezia, Visitare l’Arsenale, Comune di Venezia, https://www.comune.venezia.it/it/content/visitare-
larsenale
21
   La Biennale di Venezia, BIENNALE ARTE 2017, OVER 615,000 VISITORS, Biennale di Venezia,
https://www.labiennale.org/en/news/biennale-arte-2017-over-615000-visitors
22
   The IUAV di Venezia is a design university that includes the carreers of Architecture, Panning, Fashion,
Industrial design, among other design related careers. The school is among the best 100 universities according to the
QS World University Ranking.
old factory with big heights were adapted to host two floors of classrooms, with an auditorium and
a cafeteria, the intervention was made with light materials such as drywall. The electric and air
installations are exposed retaining in some kind its industrial past. The exterior red brick facades
Figure 11. The Cotonificio on the right side the current view and on the left side a view from 1925
Font: Armando Cepeda Guedea (2019) and Archivio Fotografico Giacomelli (1925)
Conclusions
Toristification is a reality that affects cities around the world but in Europe and especially in Italy
the phenomena are stronger, the process is not immediate, in the case of Venice the toursitification
process can be traced back to 1950’s. The model of the industrial city of the early 20th is gone and
is replaced by a service-based economy, in the case of Venice the service is tourism. In the last
years many studies have emerged about the effects of touristification on Venice, but in most of the
cases is form the social perspective, this article intends to give an insight of how the touristification
affects form the architectural urban perspective. In the Venice the urban structure has changed,
were the old industrial zones transformed into touristic areas, were the visitors find amusing the
old industrial buildings transformed into hotels, shops or schools. From the architectural
perspective in Venice the old buildings were not destroyed as happens in other cities around the
world because of its architectural value and the touristic potential. The transformation of a
functional industrial city in the early 20th century to a touristic city, has affected the local
population, reducing the public spaces and services, the increase of housing in favor to touristic
accommodation, and the reduction of job opportunities is causing a constant depopulation process.
As a solution the tourism has to be regulated and reduced, and the government must support
housing and job opportunities to attract inhabitants to the city, also the new public spaces and
infrastructure must be created to give adequate live condition to its inhabitants. The cruises must
be banned of Venice because of the physical damage that are causing to the the city, so the big
ships must be relocated to any near port. The touristic housing commonly known as B&Bs also
must be regulated.
Tourism is an activity that produces millions of euros in Venice and creates jobs, but the damages
of this activity must be considered, and the preservation of the city must come first.
References
Cohen, Jon, and Federico Giovanni. “An Economic Miracle? Italy in the Golden Age, 1945–1960.”
Chapter. In The Growth of the Italian Economy, 1820–1960, 87–106. New Studies in Economic
and Social History. Cambridge: Cambridge University Press, 2001
Comune di Venezia, Serie storica della popolazione residente nel Comune di Venezia, Venice:
Comune di Venezia, 1999, p. IX.
Desidery, Renato, Relazione sugli aspetti dinamici della demografia veneziana e sui censimenti
generali del 1961, Venice:n.e, 1962, p. 63.
Bertocchi, Dario and Visentin, Francesco. “The Overwhelmed City”: Physical and Social Over-
Capacities of Global Tourism in Venice”, Sustainability 2019, no.11. (2019),
www.mdpi.com/journal/sustainability. (Consulted 11-06-2020)
Zanon, Giuliano. “Dal sovraffollamento all esodo: popolazione ed occupazione a Venezia nel
900 of Giulano Zanon”, Insula, no.4. (2000),
https://www.insula.it/images/pdf/resource/quadernipdf/Q04-01.pdf. (Consulted 14-06-2020)
Nicoletti Manfredo, Continuitá Evoluzione Architettura, Venice, Dedalo libri, 1978, p. 86.