Big Boy No. 4014 Visits Pennsylvania

A large steam locomotive rolling down a train track in front of a large crowd of people.

Big Boy No. 4014 is considered the world’s largest operating steam locomotive, and it brought spectators and train enthusiasts from around the state, nation and even from overseas as it rolled through Pennsylvania on its coast-to-coast tour. Revisit the excitement and hear what inspired so many people to travel so far to catch a glimpse of history.