1. Fussballclub Union Berlin e. V. is commonly referred to as 1. FC Union Berlin (pronounced ['e:asta ?ef'tse]:?u'nio:n ) also known as Union Berlin (pronounced [u'nio:n beR'li:n] ) is a pro German football club based in Kopenick, Berlin. The club's roots are traced back to 1906, the year that its predecessor FC Olympia Oberschoneweide was founded. From 2009 to 2019 they played in the 2. Bundesliga The second tier in German football. In 2019, following the defeat of VfB Stuttgart in the relegation play-offs, Union won promotion to the Bundesliga top division to the top flight for the first time ever in Union's history. The promotion was in the season 2019-20.
In during the Cold War, Union was located on East Berlin, joining the German league after the unification of the city and the country in the year 1990.
Their stadium Stadion An der Alten Forsterei is the second largest stadium in the German capital. It has hosted Union Berlin and its forerunners since its opening in 1920. It also plays host to concerts as well as the annual Weihnachtssingen Christmas carols celebration.
