Union Pacific Big Boy No. 4014, the world's largest operating steam locomotive, is making its way through the Midwest.

Huge crowds of train fans turn out as the 1940s era Big Boy steam locomotive is making a rare trip cross country.

Union Pacific’s 1.2-million-pound iron giant is on its first coast-to-coast tour. At every stop, rail fans break down.

The world's largest operating steam locomotive will return for an overnight stop this week in Salina. Union Pacific's Big Boy No. 4014 is set to arrive at 6 p.m. July 23 at the Old Depot, 400 N. 13th ...

Union Pacific has rolled out one of its historic attractions to celebrate the 250th birthday of the United States.

There is still time to catch Big Boy aka the world’s largest operating steam locomotive before its first coast-to-coast tour ...

The world’s largest operating steam engine, Union Pacific Big Boy 4014, is on the East Coast of the United States for the first time in history. It passed through Westmoreland and Allegheny counties ...

One of the largest and most powerful steam locomotives ever built is scheduled to make a brief stop in Kit Carson later this month, bringing a living piece of American railroad history back to the ...

The Union Pacific Big Boy No. 4014 received A’s all around as the 85-year-old, 1.2-million-pound steam engine, hauling 25 ...

It’s a rolling, hissing piece of history that has been drawing huge crowds as it makes its way across the United States. And it’s headed for Berks County this week. Union Pacific’s Big Boy No. 4014, ...

Springfield's history is tied to the steam locomotives, with the largest remaining steam train coming into town this weekend.

The distinctive steam whistle of Union Pacific’s Big Boy No. 4014 engine bellowed throughout Northeast Ohio on July 13, greeting visitors who came to see it on its return journey west. The train ran ...