Big Boy Steam Engine

Cheyenne | Park to Park

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.

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1705 Morrie Ave.

Cheyenne, WY, 82001

(307) 638-4357

Tripadvisor Traveler Rating  281 Reviews

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