Two completed projects from early in Rosenthal’s career made an enormous splash at the time: the Landhaus Bab, Berlin- Wilmersdorf, (1923-25) and the Haus Ernst Rosenthal (1923-25), built for his brother. The Haus Ernst Rosenthal was the first use of flat roof for a villa in Berlin - and the very public controversy it caused with building officials was certainly noted by his most progressive colleagues. The plasticity of the massing shows a composition of cubes - playing with the materiality of brick and the flatness of plaster planes - perhaps influenced by Wright’s Unity Temple of 1905 or more likely, the Dutch architects who were so influenced by Wright...also, a bit of Loos in the interior? The expressionist house Landhaus Bab was praised by one critic from the period as “born entirely of the feeling of the present.” Rosenthal likely adapted the jagged zigzag gable decoration from Hans Poelzig’s Luban factory of 1912 with which he would have been familiar since it was nearby Rosenthal’s childhood home. The interior of the Landhaus Bab brought Rosenthal particular notoriety - it was especially colorful and filled with wall panels, built-in furniture, and bespoke loose furnishings made from a variety of exotic wood veneers, all in a “modern” idiom.