Ray Kappe RK12 side table in red oak by Original in Berlin, Germany, 2020 California Modernism is synonymous with sophisticated minimal structures, featuring open plan design and indoor-outdoor living, inspired by traditional Japanese architecture. One of the movement’s most influential architects was Ray Kappe. A specialist in creating multipurpose buildings, Kappe was considered a master of constructing houses that were both modern yet warm. Level by level, his buildings take you on a journey