The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop in the Mile High City on Friday. It first rode the rails in the 1940s ...

Ride a historic steam train through Colorado canyons, forests, and mountain views on an unforgettable journey.

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. Four charts that are a warning ...

Getting your Trinity Audio player ready... Colorado is home to both hot springs and historic scenic train rides, which both are known for the release of steam. Why not combine these experiences for a ...

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. DENVER — Union Pacific’s Big Boy No. 4014 – ...