Otto-Wagner-Spital, Psychiatric hospital complex in Penzing, Vienna, Austria

Otto-Wagner-Spital is a hospital complex on the Baumgartner Höhe in Vienna's Penzing district, built in pavilion style and opened on 8 October 1907. Its main building has a pale cream central section bearing the raised inscription OTTO WAGNER SPITAL, a portico with four columns and a balustrade above the entrance steps, and lower cream and reddish-orange wings with green shutters. Otto Wagner revised the plans drawn up under Carlo von Boog.

The complex opened in 1907 as a modern psychiatric institution designed by Otto Wagner and Carlo von Boog following progressive treatment concepts. It was among the first places where architecture and medical care worked together on this scale.

The site's nickname Steinhof comes from the Steinhofgründe, the grounds on which the hospital was built. Because of the psychiatric hospital, Steinhof and Baumgartner Höhe became everyday Viennese and eastern Austrian euphemisms for psychiatric institutions. The gilded dome of the church gave rise to further nicknames: Lemoniberg, Zitronenhügel, Monte la citrone and Zwiebelparlament.

The location sits on a hillside in Penzing with multiple access points, and paths between pavilions are well-maintained. Comfortable walking shoes are recommended since the terrain is uneven and exploration is best done on foot.

The site's church, with its gilded dome, gave rise to Viennese slang: Lemoniberg, Zitronenhügel and Zwiebelparlament were used as euphemisms for the psychiatric institution. The nickname Steinhof comes from the Steinhofgründe, the grounds on which the hospital was built.