The Union Pacific Big Boy No. 4014 is the world's largest operating steam locomotive. It will remain in Cowtown until Sunday, though it will not be on public display after Friday afternoon.

As part of its “Westward Bound” tour, the world’s largest steam locomotive is coming to Roseville next week — one of only two major display stops the train is making while traveling ...

Watch on DVD or Blu-ray starting November 21st, 2002 - Buy Americas Steam Trains Challenger 3985 The Worlds Largest Operating Steam Locomotive DVD ...