Massive 1940s Big Boy locomotive draws throngs on rare cross-country journey

The world's largest steam locomotive, the Big Boy from the 1940s, is making a rare trip across the United States, and enormous crowds of train enthusiasts are turning out to see it, according to NPR and Georgia Public Broadcasting.

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NPRThe biggest steam locomotive is whistle-stopping across the U.S.Georgia Public BroadcastingThe biggest steam locomotive is whistle-stopping across the U.S.

Built by Union Pacific, the Big Boy is the biggest steam locomotive ever constructed, and this whistle-stop tour marks one of its few long-distance runs in decades. The locomotive's size and historical significance have turned each stop into a major event, with fans lining tracks and gathering at stations.

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

The sight of the massive engine chugging through towns has captivated both longtime railfans and casual observers, highlighting a lasting fascination with steam-era technology. Union Pacific periodically runs the Big Boy for special excursions, but this cross-country journey is particularly significant due to its scope and the sheer number of spectators it has attracted along the route.