Stadion An der Alten Försterei

Stadion An der Alten Försterei in Berlin is Union Berlin's beloved fortress, a fan-owned-feeling Bundesliga ground where eisenrot support and DIY culture create Germany's most distinctive atmosphere. Steep stands built with supporter involvement make matchdays feel communal and defiant. European nights in Köpenick stunned the continent. The Försterei is identity before architecture.

Opened in 1920 and expanded by fans and club through the 2000s–2010s, Alte Försterei became Union's Bundesliga and Champions League home. It hosted historic European nights after the club's remarkable rise. Renovations preserved the terrace culture central to Union's brand. The stadium's legacy is Union Berlin's improbable journey to Europe's top table.