Union Pacific Big Boy, the largest, most powerful steam locomotive in the world, tours the U.S.

Union Pacific's Big Boy, the largest steam locomotive ever built, is embarking on a cross-country tour to commemorate America's bicentennial. This historic train, known for its immense power and size, is traveling to evoke a sense of nostalgia and marvel among rail enthusiasts and the general public alike. This tour not only celebrates America's rich industrial heritage but also highlights the engineering feats of the past, reminding us of the technological advancements that shaped modern transportation.