Train lovers across the country are turning out in huge numbers to catch a glimpse of a true piece of American railroad history rolling through their cities.
Union Pacific’s Big Boy No. 4014 — recognized as the world’s largest operating steam engine locomotive — is on a rare cross-country tour, thrilling crowds at every stop along the route.
The massive locomotive, which dates back to the 1940s, rolled into Philadelphia on July 5, 2026, where attendees gathered to take photographs and get an up-close look at the historic machine. The stop was one of many planned across multiple cities and states throughout the United States.
The tour is tied to the celebration of America’s 250th anniversary, giving the public a unique opportunity to see the legendary steam-powered giant in action — something that rarely happens given the locomotive’s age and size.
