1. FC Union Berlin is a professional football club based in Berlin, Germany. Founded in 1966, the team plays its home matches at the Stadion An der Alten Försterei, which has a capacity of around 22,000 spectators. The club has a strong fan base and is known for its passionate supporters. The team competes in the Bundesliga, the top tier of German football. Union Berlin achieved promotion to the Bundesliga for the first time in 2019, marking a significant milestone in its history. The club's colors are red and white, and its mascot is a bear named Unioner.