Train lovers flock to see “Big Boy,” the world’s biggest steam locomotive

Trainspotters love to see a Union Pacific locomotive rounding a curve or crossing a bridge. First built in 1941, these moving museums showcase the best of American railroad history. "CBS Saturday Morning" delivers two hours of original reporting and breaking news, as well as profiles of leading figures in culture and the arts. Watch "CBS Saturday Morning" at 7 a.m. ET on CBS and 8 a.m. ET on the CBS News app. Subscribe to "CBS Mornings" on YouTube: https://youtube.com/CBSMornings Watch CBS News 24/7: https://cbsnews.com/live/ Download the CBS News app: https://cbsnews.com/mobile/ Follow "CBS Mornings" on Instagram: https://instagram.com/cbsmornings/ Like "CBS Mornings" on Facebook: https://facebook.com/CBSMornings Follow "CBS Mornings" on X: https://twitter.com/CBSMornings Subscribe to our newsletter: https://cbsnews.com/newsletters/ Try Paramount+ free: https://paramountplus.com/?ftag=PPM-05-10aeh8h For video licensing inquiries, contact: [email protected]