Otto Wagner Church or Steinhof Church, (Kirche am Steinhof) - also called the Church of St. Leopold, designed and built between 1903 and 1907 by the 63-year-old architect Otto Wagner, is considered one of the most important Art Nouveau churches in the world.

The copper-covered dome is visible from quite a distance, as the church stands high on the crest of the hill (the Baumgartnerhöhe) below the Galitzinberg in the 14th Vienna district, Penzing.

On the two bell towers enthrone the bronze figures made by the sculptor Richard Luksch (1872-1936): St Leopold, protection patron of Vienna and Lower Austria, on the west tower, and St Severin, protection patron of Linz, on the east tower.