Design work on Haus Wittgenstein
· Haus Wittgenstein, Kundmanngasse, Vienna, Austria

Wikimedia Commons · CC BY 3.0 · file Wittgenstein worked intensively on his sister Margaret’s modernist townhouse in Vienna with Paul Engelmann and other architects. The source gives a 1926–1929 span; year-level precision marks the beginning of his work.