A New Gridiron Venue

May 12, 1966 - St Louis' Busch Stadium opens; Braves lose to Cards 4-3 in 12 innings. The St. Louis Football Cardinals played in Busch Stadium from 1966 through 1985.

The original Busch Stadium, also known as Busch Memorial Stadium, was a multi-purpose venue that hosted professional football for nearly three decades. Starting in 1966, it became the home of the NFL's St. Louis Cardinals, who shared the stadium with the MLB's St. Louis Cardinals. The stadium's design allowed for conversion between baseball and football configurations, accommodating around 50,000 fans for football games.  

Busch Stadium witnessed the St. Louis Cardinals (football) for 22 seasons until the team relocated to Phoenix after the 1987 season. Notably, the stadium also briefly hosted the St. Louis Rams for a portion of the 1995 season before they moved to the Edward Jones Dome. The final NFL game played at Busch Stadium was October 22, 1995. While primarily a baseball venue in its later years, Busch Stadium holds a significant place in St. Louis football history, serving as the city's main stage for the sport for a considerable period.  

According to Wikipedia, the St. Louis Rams played there and were the last home football team in the final gridiron game on October 22, 1995, against the San Francisco 49ers. After the Rams left Busch Stadium, it was retrofitted for baseball only. Grass replaced the Astroturf, and numerous other improvements were completed at Busch Stadium.