Train enthusiasts in northern Illinois will soon get the chance to see an iconic steam engine as it makes its way across the country on a national tour. The Union Pacific Big Boy No. 4014 launched ...

ROCHELLE, Ill. (WTVO) — Union Pacific’s Big Boy No. 4014, the world’s largest steam engine train, is set to return to northern Illinois this week, and here’s where you can see it.

according to a history on Union Pacific's website. Last year, Roseville hosted the world's largest steam train, Big Boy No. 4014, as one of the train's 19 whistle-stops across five states.