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 "Big Boy" historic locomotive will be making several stops around Colorado this week.

Built in the 1940s, Big Boy No. 4014 retired in 1961 after traveling for more than one million miles. It's now making its way across the country in honor of America's 250th birthday ...

Here is where you can see Big Boy No. 4014 in Kansas this week.

Big Boy is still drawing big crowds as the world's largest operating steam locomotive begins its homeward run to cap its ...

The historic Union Pacific Big Boy No. 4014 is rolling through western Pennsylvania on Saturday, with a stop in Leetsdale.

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

MEXIA, Texas (KWTX) - The world’s largest operating steam engine, Big Boy No. 4014, made a stop at E Commerce St. Crossing in Mexia as part of the Pacific Union’s Heartland of America Tour. Hundreds ...

Union Pacific's legendary Big Boy 4014 is the world's largest and most powerful operating steam locomotive.  On Tuesday, it ...

KANSAS CITY, Mo. (KCTV) - The world’s largest operating steam locomotive is in Kansas City, Missouri. Union Pacific’s No. 4014, aka “Big Boy,” arrived at Union Station Tuesday evening and will be ...

The crowd welcoming “Big Boy” might not have been as large as in years past due to the rain Thursday, but those who made it to the Union Pacific Depot in North Lawrence were still full of enthusiasm ...