Union Pacific faced the immense challenge of hauling heavy freight trains across rugged mountain terrain, requiring locomotives with exceptional power and reliability. Unlike other railroads that ...

Hundreds of visitors flocked to the historic rail town of Roseville on Friday to see the world’s largest steam locomotive during its two-day visit. Union Pacific’s Big Boy No. 4014 ...

Union Pacific's legendary Big Boy No. 4014, the world’s largest operating steam locomotive, built to conquer mountains, is making 19 whistle-stops in five states including Nevada this summer during ...

The Union Pacific Big Boy No. 4014 is the world's largest operating steam locomotive. It will remain in Cowtown until Sunday, though it will not be on public display after Friday afternoon.