Big Boy,” a 1.2 million-pound locomotive, is back in Colorado after being restored to the world’s largest operating steam ...

DENVER (KDVR) — The world’s largest operating steam locomotive, known as Big Boy No. 4014, is coming back to Colorado — and this time, it’s bringing a friend. Union Pacific, a railroad ...

The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop ...

Big Boy restaurants are celebrating its big 89th birthday this week with menu deals. The signature Big Boy burger is 99 cents on Wednesday, June 18, in honor of Big Boy restaurants 89th birthday.