Horseshoe Curve National Historic Landmark, Altoona

About Horseshoe Curve National Historic Landmark

Horseshoe Curve National Historic Landmark in Altoona preserves one of the world's greatest engineering achievements. Visitors explore a small museum, watch orientation films, and access observation areas to see the iconic railroad curve carved through the Allegheny Mountains. A funicular or UTV transports guests up the steep terrain to reach the best viewpoints. The landmark tells the story of the Pennsylvania Railroad's 1854 triumph over the 2,161-foot mountain barrier using switchbacks and excavation. Irish immigrant workers spent three grueling years on this hazardous project, which connected eastern and western rail networks. The site became a tourism destination, Nazi spy target, and one of eight world engineering marvels. A gift shop offers souvenirs. The Railroaders Memorial Museum operates the property. Visitors interested in railroad history and 19th-century engineering will find compelling scenery and detailed exhibits about this pivotal transportation breakthrough.