Inside 'Big Boy': Ride aboard the world's largest steam locomotive

Union Pacific Big Boy 4014: The Great Race Across the East | Buffalo to Altoona (4K)

WATCH LIVE | Historic Union Pacific Big Boy locomotive No. 4014 arrives in Rocky River

Historic Union Pacific Big Boy locomotive No. 4014 moves through downtown Cleveland

Union Pacific Big Boy: Colossus Continues Coast Tour

History in Motion: Big Boy 4014's Journey Across America

Historic Union Pacific Big Boy locomotive No. 4014 making stop in Rocky River

Big Boy Locomotive continues its tour through the St. Louis area

Big Boy No. 4014 steam locomotive makes stops in Missouri

Crowds gather to see Union Pacific's Big Boy as it arrives in Pleasant Hill and Kansas City

Big Boy Locomotive continues its tour

Union Pacific's famous Big Boy arrives in Pleasant Hill, Missouri

Ed Dickens Stops Big Boy 4014 For This Trespasser In Ashtubula, Ohio!

Union Pacific's Big Boy coming to Colorado on US tour

The world's largest operating steam locomotive is in Fostoria today