World's largest steam engine coming to the Walden Galleria this June

"Big Boy," the world's largest operating steam engine, will be chugging down the tracks to the Walden Galleria this June as ...
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The Union Pacific Big Boy steam engine is visiting Boone and Ames in early September

The world's largest steam engine will roll through the heart of Iowa this fall. The Union Pacific Big Boy No. 4014 will soon depart on its Heartland of America Tour, highlighted by an overnight stop ...