Mile High Stadium

The stadium was built in 1948 to accommodate the Denver Bears baseball team, which was a member of the Western League during its construction. Originally designed as a baseball venue, the stadium was expanded in later years to accommodate the addition of a professional football team to the city, the Denver Broncos, as well as to improve Denver's hopes of landing a Major League Baseball team. Although the stadium was originally built as a baseball-specific venue, it became more popular as a pro-football stadium despite hosting both sports for a majority of its life.

The Broncos called Mile High Stadium home from their beginning in the AFL in 1960 until 2000. The Bears, who changed their name to the Zephyrs in 1985, continued to play in the stadium until 1992 when the franchise was moved to New Orleans. The move was precipitated by the awarding of a Major League Baseball franchise to the city of Denver, and in 1993 the Colorado Rockies season opened in Mile High. The team played the 1993 and strike-shortened 1994 seasons in Mile High setting MLB attendance records while Coors Field was being constructed in downtown Denver.

Wikipedia