DENVER (KDVR) — One of the world’s largest locomotives passed through Colorado in October, operating much like it did when it was first built in the mid-1900s. The train, known as Big Boy No.

Union Pacific's famed Big Boy steam locomotive will be headed west during its "Westward Bound" summer tour. The world's ...

Earlier in the summer, Big Boy No. 4014 toured five states during its 2024 Westward Bound Tour from Wyoming to California. In addition, this mighty steam locomotive was on public display for two ...