The Sportklub Rapid Wien (known in English as Rapid Vienna) is an Austrian football club playing in the country's capital city of Vienna. Rapid is the most popular club in Austria and have won 16 Austrian league titles, as well as 16 regional league titles (before 1948). It also prides itself as the only team from the former Ostmark, then part of the Nazi's German Reich, to win the Nazi war-time league in 1941 – as Austria was incorporated into Nazi Germany from 1938 and during World War II. The Rapid squad is often known as the "Green-Whites" for its team colours or as Hütteldorfer for the location of the Gerhard Hanappi Stadium, which is in Hütteldorf, part of the city's 14th district, Penzing.