55 Wall Street, also formerly known as the National City Bank Building, is an eight-story
building on Wall Street between William and Hanover streets in the Financial District of
Lower Manhattan in New York City, United States. The lowest three stories were completed
in either 1841 or 1842[a] as the four-story Merchants' Exchange and designed by Isaiah
Rogers in the Greek Revival style. Between 1907 and 1910, McKim, Mead & White removed
the original fourth story and added five floors to create the present building. The facade and
part of the interior are New York City designated landmarks, and the building is a National
Historic Landmark listed on the National Register of Historic Places (NRHP). The building is
also a contributing property to the Wall Street Historic District, listed on the NRHP.
55 Wall Street's granite facade contains two stacked colonnades facing Wall Street, each with
twelve columns. Inside is a cruciform banking hall with a 60-foot (18 m) vaulted ceiling,
Corinthian columns, marble floors and walls, and an entablature around the interior. The
banking hall was among the largest in the United States when it was completed. The offices
of Citibank's predecessor National City Bank were in the corners of the banking hall, while
the fourth through eighth floors were used as office space.
The Merchants' Exchange building was erected to replace an older structure that had burned
down in the Great New York City Fire of 1835. 55 Wall Street subsequently hosted the New
York Stock Exchange and the United States Custom House until a new Custom House
building was developed on Bowling Green. After the building's expansion, it served as the
headquarters of National City Bank from 1908 to 1961, though Citibank continued to own the
building until 1992. The upper stories operated as a hotel from 2000 to 2003, then were
renovated again and converted into condominiums in 2006. The original banking room
became a ballroom.