Brøndbyernes Idrætsforening, usually abbreviated to Brøndby IF, is a professional association football club based in Brøndbyvester, Capital Region of Denmark. The club was founded in 1964. Brøndby IF has won 11 Danish championships and 7 Danish Cups. Brøndby's most successful period was from 1985 to 2005 when, in twenty years, they won ten league titles. In 1991, Brøndby reached the semi-finals of the UEFA Cup and became the first and only Danish club to ever reach a European semi-final. Brøndby have always played their matches at Brøndby Stadion.