The world's largest operating steam train is in Denver. Union Pacific's legendary Big Boy No. 4014 locomotive made a pit stop ...

Big Boy's Heartland of America Tour to include Colorado. Union Pacific announced on June 17 that its legendary steam locomotive will embark on an eight-week Heartland of America Tour starting Aug. 29.

The world's largest steam locomotive chugged through Colorado Thursday as part of its limited summer tour. Here are some of ...

Gabby Leclair exclaims “I see it” as she uses her pretend binoculars to see Union Pacific’s No. 4014 “Big Boy” atop her dad’s shoulders as it steams toward Hempstead, Friday, Oct. 4, 2024.

Union Pacific’s historic Big Boy steam locomotive No. 4014 is touring the Union Pacific system throughout 2019 to commemorate the transcontinental railroad's 150th anniversary.

Union Pacific’s Big Boy takes its place near Union Station in Ogden on Friday, July 19, 2024, ready for the weekend’s display. Rail fans wait to catch their first glimpse of the Big Boy at ...

People line the railroad tracks in Crete as Union Pacific’s Big Boy Number 4014 steam engine rolls through as part of its Heartland of America Tour on Sept. 9, 2024.

The train, called the "Big Boy," was built in 1941. Only 25 of these trains were ever built, and they are the largest steam engines in the world, Union Pacific said.

Union Pacific's Big Boy No. 4014 to steam into Illinois next week. Here's when to see it The 10-state 'Heartland of America' tour will make four stops in Illinois, including a public viewing day ...

The Union Pacific Big Boy was originally constructed in 1941, with its creation led by then-president of Union Pacific Railroad, William M. Jeffers, and development led by Otto Jabelmann as the ...

The historical steam engine locomotive, Union Pacific's Big Boy No. 4014, has made its way to Arkansas on the "Heartland of America Tour".

Big Boy No. 4014 was delivered to Union Pacific in December 1941. The locomotive was retired 20 years later, having traveled 1,031,205 miles in its 20 years in service, according to Union Pacific.