The Interbau Apartment was designed by Oscar Niemeyer with Soares Filho for the IBA'57 in the small suburb of Hansaviertel, Berlin. The Interbau Apartment is in the south-west corner of the Hansaquarter lies the eight-story building by Oscar Niemeyer and Soares Filho, Brazil's contribution to the International Builders Fair of 1957.

The concrete frame construction rests on V-shaped pillars and is 27m high, 72m long and 15m wide. Its longitudinal axis runs north-south, there is a total of 78 apartments. The building has a facade defined by yellow and blue balconies. Underneath the building, six staircases are entered through primary coloured blocks, clad in small mosaics and featuring graphic stencilled numbers. A polka-dot tower stands next to the block with a service and passenger elevator.