Cheyenne-based Big Boy 4014, the world's largest operating steam locomotive, will make its first ever coast-to-coast tour ...

Editor’s note: This article has been updated to clarify the weight of the train. DENVER (KDVR) — “Big Boy,” one of the world’s largest trains, is taking off on Wednesday and plans to stop in three ...

Union Pacific’s Big Boy No. 4014 – the iconic, one-million-pound steam locomotive – made a stop in Denver Wednesday morning, and Airtracker7 was overhead. Marjorie Taylor Greene Tells ’60 Minutes’ ...

For the first time ever, both coasts could receive a visit from the world's largest operating steam locomotive.

The world's largest steam engine is coming back to Colorado. Union Pacific's Big Boy No. 4014 was spotted in Denver before heading to northern Colorado and Cheyenne. Six more houses collapsed into the ...

OGDEN — A legendary locomotive made its return to Ogden this weekend. Union Pacific’s Big Boy No. 4014 made a weekend stop that drew thousands of visitors of all ages to Union Station from its arrival ...