A variety of architectural styles can be found in Vienna,
such as the Romanesque Ruprechtskirche and the Baroque Karlskirche.
Styles range from classicist buildings to modern architecture.
Art Nouveau left many architectural traces in Vienna.
The Secession, Karlsplatz Stadtbahn Station, and the
Kirche am Steinhof by Otto Wagner rank among the best known examples
of Art Nouveau in the world.