Big Boy Steam Engine

  • 17th at Morrie Ave.
  • In Holliday Park
  • Cheyenne, WY 82001
  • (307) 637-6423
  • Visit website
  • Email


Even in retirement, Old Number 4004 remains an imposing sight.  The world's largest steam locomotive, this powerful coal-fired engine was designed to pull a 3600-ton train over steep grades between Cheyenne, WY and Ogden, Utah.  The 4004 is one of the eight remaining Big Boys on display throughout the country.

On display year-round in Holliday Park. The engine is in the southeast corner of the park. You can park your car in the lot accessible from East 17th Street and Morrie Avenue.


Click here for other Cheyenne Train Attractions


General Info
Children Welcome Yes