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

Jimmy Kimmel gave a salute to “The Late Show With Stephen Colbert” — and blasted rival network CBS — on Thursday evening, ...

Twenty-five Big Boy locomotives were built for Union Pacific in 1941. Less than half that remain, and No. 4014 is unique in that it is still touring the U.S.

Big Boy was founded in Glendale, Calif., in 1936 and a year later introduced its iconic mascot clad in red-and-white checkered overalls. The chain emerged from bankruptcy in 2000, ...

Big Boy, all 1.2 million pounds of it, came rolling into Houston Friday afternoon. The four-cylinder steam engine was built in 1941, and is the last of 25 similar models still in existence.