Apartment building Hansaviertel Berlin Germany. Apartment building at Altonaer Strasse 3-9 in Hansaviertel modernist housing estate in Berlin Germany. Flats at Hansaviertel. Built as part of the Interbau Exhibition rehabilitation program, in which Le Corbusier, Walter Gropius, and Ludwig Mies van der Rohe also participated."The model apartment building in the Hansaviertel was built on the occasion of the Interbau exhibition in Berlin. This design sought to combine as far as possible the advan