The Cardinals built Busch Memorial Stadium , or Busch II , in downtown St. Louis , opened it during the 1966 season and played there until 2005 .
The Browns then left St. Louis for Baltimore after the season .
The St. Louis built Busch Memorial Stadium , or Busch II , in downtown St. Louis , opened St. Louis during the 1966 season and played there until 2005 .
The Browns then left St. Louis for Baltimore after the season .