101 East 63rd Street is one of just three Manhattan houses designed by famed architect Paul Rudolph
Paul Marvin Rudolph (October 23, 1918 – August 8, 1997) was an American architect and the Chair of Yale University's Department of Architecture for six years, known for his use of concrete and highly complex floor plans. His most famous work is the Yale Art and Architecture Building (A&A Building), a spatially complex brutalist concrete structure.
The buildings were large, dominating, consumptive of vertical space and weighted heavily to the earth—all qualities that lent themselves to the Brutalist architecture movement that started on the heels of early 20th century Modernism. Most prominent from the 1950s through the ‘70s, the aesthetic became a favorite for governmental institutions, shopping centers, high-rise residential developments, and any other structure that wished to communicate Brutalism’s intimidating strength and clear functionality.