The Cheyenne Frontier Days Rodeo is an annual rodeo held in Cheyenne, Wyoming. It is likely one of the largest rodeos on the planet and attracts over 200,000 guests annually.
The rodeo was first held in 1897 to have fun the opening of the brand new Union Pacific Railroad line by means of Cheyenne. The rodeo has been held yearly since then, apart from just a few years throughout World Warfare II.