22K views · 351 reactions | The Central Pacific and the Union Pacific Railroad companies raced to complete the Transcontinental Railroad for over seven years. See the true story unfold in the premiere episode of The Engineering That Built The World, TONIGHT at 9/8c. #EngineeringThatBuilt | HISTORY | Facebook

Union Pacific’s legendary Big Boy #up4014 – the world’s largest operating steam locomotive – is set to embark on its first ever coast-to-coast tour in 2026! As this icon connects the nation, we are working to build the future: America’s first transcontinental railroad. 🎥Take a behind-the-scenes look at history in motion and stay tuned for the schedule details! | Union Pacific Railroad