The Cheyenne Frontier Days Old West Museum is located in Cheyenne, Wyoming, United States. The museum was founded in 1978. It is a 501(c)(3) non-profit organization, dedicated to interpreting, conserving and exhibiting the history and material culture of Cheyenne, Cheyenne Frontier Days, the State of Wyoming and the American West. The museum features the Cheyenne Frontier Days Hall of Fame. Permanent exhibits include Western horse-drawn carriages and wagons, the history and memorabilia of Cheyenne Frontier Days rodeo celebration, local history of Cheyenne, pioneer artifacts and clothing, and Western and folk art. The Cheyenne Frontier Days Old West Museum is home to the "World’s Largest Outdoor Rodeo and Western Celebration" with its permanent exhibit on the history of Cheyenne Frontier Days.