Wien Praterstern is one of Vienna's main railway stations, used by 35,000 people daily. It is located on the roundabout Praterstern in Leopoldstadt, in the north of the city. Vienna's two most recognisable structures, the Wiener Riesenrad and the Stephansdom (cathedral), are both visible from the platforms. Underneath the station is the Praterstern U-Bahn station, which is on U1 and U2 of the Vienna U-Bahn.

Leopoldstadt is the 2nd municipal district of Vienna in Austria. As of 1 January 2016, there are 103,233 inhabitants over 19.27 km2 (7 sq mi). It is situated in the heart of the city and, together with Brigittenau, forms a large island surrounded by the Danube Canal and, to the north, the Danube. It is named after Leopold I, Holy Roman Emperor. Due to its relatively high percentage of Jewish inhabitants before the Holocaust, Leopoldstadt gained the nickname Mazzesinsel. This context was a significant aspect for the district twinning with the New York City borough Brooklyn in 2007.