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 No. 4014 made its way to Denver Thursday, where it wasn't available for public viewing but where Airtracker7 was able ...

The world's largest steam locomotive chugged through Colorado Thursday as part of its limited summer tour. Here are some of ...

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

Enjoy the sights and sounds of Union Pacific's Big Boy No. 4014 in Colorado.

Union Pacific’s Big Boy began its only scheduled trip of 2025 today (July 17), heading from its home base in Cheyenne, Wyo., ...

The Union Pacific Big Boy No. 4014 rolls past Busch Stadium on its “Heartland of America Tour” on Thursday, Sept. 12, 2024. The tour started Aug. 28 in Cheyenne, Wyoming, and is traveling ...

Union Pacific's Big Boy No. 4014 steam locomotive arrives in Kansas City next week Admission is free and open to the public.

The Union Pacific released its full tour of the Big Boy No. 4014 steam-powered train Monday.

Union Pacific's Big Boy No. 4014 locomotive train visits and whistle stops at Greeley, Denver, Cheyenne for limited summer 2025 tour with No. 1616 Locomotive.

Union Pacific’s Big Boy 4014, the world’s largest steam locomotive still in operation, will embark in its Heartland of America tour on Wednesday morning in Cheyenne, Wyoming.

Big Boy No. 4014 pulls out of Salt Lake Central Station in Salt Lake City on July 4. The steam engine is scheduled to return to Utah this weekend, departing Elko, Nevada, on Friday for Ogden.