With space for 22 012 visitors the largest football stadium in Berlin is surprisingly unknown to most locals. But this arena, opened in the 1920s for the 1. FC Union Berlin, is a true gem. There are regular tours available for fans, giving visitors an exclusive glimpse into the history of the team and its stadium. Special viewings of the games or private events can also be organised by the experienced team, with in-house catering also on offer.