The Cheyenne Frontier Days Rodeo is an annual rodeo held in Cheyenne, Wyoming. It is likely one of the largest rodeos on this planet and attracts over 200,000 guests every year.
The rodeo was first held in 1897 to rejoice the opening of the brand new Union Pacific Railroad line via Cheyenne. The rodeo has been held yearly since then, apart from a number of years throughout World Battle II.