Stadion An der Alten Försterei (German pronunciation: [ˌʃtaːdi̯ɔn an deːɐ̯ ˈaltn̩ fœʁstəˈʁaɪ̯]; English: Stadium at the old forester's house) is a football stadium in Köpenick and the largest single-purpose football stadium in the German capital of Berlin. It has been home to football club 1. FC Union Berlin and its forerunners since its opening in 1920. The stadium became also known for events like the annual "Weihnachtssingen" (Christmas Carols Event) and the "WM-Wohnzimmer" (World Cup Living Room) in 2014.