Haus Wittgenstein
Haus Wittgenstein, (also known as the Stonborough House and the Wittgenstein House) is a house in the modernist style on the Kundmanngasse, Vienna, Austria. The house was commissioned by Margaret Stonborough-Wittgenstein, who asked the architect Paul Engelmann to design a townhouse for her. Stonborough-Wittgenstein invited her brother, the philosopher Ludwig Wittgenstein, to help with the design.

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