Big Boy Steam Engine
Big Boy Steam Engine, the world’s largest steam locomotive, traveled between Cheyenne and Ogden, Utah. Engine no. 4004, one of 8 on display in the U.S., can be viewed in Holliday Park at 17th Street and Morrie Avenue. For more information, visit the website at https://www.cheyenne.org/listing/big-boy-steam-engine/116/.