St. Louis – the Gateway Arch meets a giant of the rails. 🚂 Big Boy #UP4014 rolls into town, bringing legendary steam power to the Gateway to the West on Union Pacific’s coast-to-coast tour to celebrate #America250. 📍 Where: St. Louis Union Station | 1820 Market St. ➡️ Sunday, July 19 | 9 a.m.-3 p.m. ✅ Free Admission ⚠️ Safety First: Please remember to stand 25 feet back at all times. If you notice someone closer than 25 feet, kindly ask them to step back. Maintaining a safe distance helps keep everyone safe and reduces distractions for the crew as they focus on safe operations.