A 600-ton piece of history is in Houston, allowing hundreds a chance to see the Big Boy locomotive up close. The 80-plus-year-old engineering marvel is wrapping up its trip through the heartland, stopping at Houston's Amtrak station on Washington Avenue.

A marvel of engineering rolled into Houston. The Big Boy locomotive chugged its way to the city, drawing in a crowd of thousands on Sunday. The 133-foot-long and 1.2 million pound black locomotive, known as Big Boy,

A marvel of engineering rolls into Houston! Big Boy, the largest steam locomotive, draws crowds downtown.