photo by: Mike Yoder

A large crowd gathers Monday, Aug. 9, 2021, at the Union Pacific Depot in North Lawrence to see Union Pacific steam locomotive No. 4014, also known as "Big Boy." The locomotive is on a 10-state tour.

The Union Pacific’s historic “Big Boy” steam locomotive stopped in North Lawrence on Monday afternoon and got a big welcome.

The old steam locomotive, built in 1941, was last in Lawrence in 2019 after the Union Pacific reacquired the engine and restored it as part of a celebration of the 150th anniversary of the transcontinental railroad. The train is again making a national tour, having departed from its home base of Cheyenne, Wyo., on Thursday.

photo by: Mike Yoder

People take photographs of the “Big Boy” train and one another as the steam locomotive arrived in Lawrence Monday, Aug. 9, 2021. The locomotive is on a 10-state tour.

photo by: Mike Yoder

An engineer addresses the crowd from Union Pacific Steam locomotive No. 4014, also known as “Big Boy,” after the train stopped in Lawrence on Monday, Aug. 9, 2021, while on a 10-state tour.

The engine will be on display all day Tuesday at Union Station in Kansas City, Mo. The engine will be back in Lawrence on Sept. 2 from 10:15 a.m. to 10:35 a.m. as it makes its way back to its home base.

At 132 feet long and 1.2 million pounds, the engine is a massive machine. It carries 25,000 gallons of water to make it steam, and back in the day carried 56,000 pounds of coal to create its fire. Today, it uses oil instead of coal, according to UP.

The 4014 — one of 25 Big Boy locomotives built — travelled more than 1 million miles before it was retired from service in 1961.

photo by: Mike Yoder

Union Pacific Steam locomotive No. 4014, also known as “Big Boy,” approaches the Union Pacific Depot in North Lawrence on Monday, Aug. 9, 2021, while on a 10-state tour.

photo by: Mike Yoder

A large crowd gathers Monday, Aug. 9, 2021, at the Union Pacific Depot in North Lawrence to see Union Pacific steam locomotive No. 4014, also known as “Big Boy.” The locomotive is on a 10-state tour.

photo by: Mike Yoder

People take photographs of the “Big Boy” train and one another as the steam locomotive arrived in Lawrence Monday, Aug. 9, 2021. The locomotive is on a 10-state tour.

photo by: Mike Yoder

Union Pacific Steam locomotive No. 4014, also known as “Big Boy,” arrives in Lawrence on Monday, Aug. 9, 2021, while on a 10-state tour.