The Alexanderhaus, built in 1930-32, and the Berolinahaus opposite it and built with it, are the last major buildings by architect and industrial designer Peter Behrens (1868-1940).

Behind the strictly gridded façade lies a sophisticated and in many aspects unusual construction. For example, the supporting framework has to bridge the tubes of two different subway lines, but above all, in some areas the usual layering of steel and reinforced concrete construction – a supporting skeleton made of steel rises on a reinforced concrete base – is literally turned on its head.

The Alexanderhaus thus impressively testifies to the ease with which Berlin civil engineers at the end of the Weimar era were able to reliably construct even sophisticated skeleton structures in reinforced concrete as well as steel.