St. Florian's Cathedral is the main church in the Praga district and one of the few Warsaw churches that survived World War II. Built between 1888 and 1904 in the Neo-Gothic style, it served as Stalin's headquarters for a period in 1945. The interior contains original stained glass and furnishings — a rare survival in a city where almost everything was destroyed.
The cathedral stands in the heart of historic Praga, surrounded by the pre-war tenement blocks that give the district its distinctive character. It's worth a look if you're exploring Praga, and provides a useful contrast with the reconstructed churches of the Old Town.