St. Mary's Cathedral, Fürstenwalde
St. Mary's Cathedral is a United Protestant church in the town of Fürstenwalde upon Spree, Brandenburg, Germany. It was formerly the cathedral of the Bishopric of Lebus, which was a Catholic diocese before the Protestant Reformation. The building is owned and used by the United Protestant St. Mary's Cathedral Congregation which forms a parish within the Evangelical Church of Berlin-Brandenburg-Silesian Upper Lusatia, an umbrella comprising mostly Lutheran, but also Calvinist and united Protestant congregations.