The four-year slog to carve through the Alleghenies was made possible by the hard work of Irish immigrants hired by the Pennsylvania Railroad. The Horseshoe Curve, and ultimately the new ...

Courtesy photo Irish Pennsylvania Railroad Workers operate machinery during railroad construction in the 1850s. The world famous Horseshoe Curve continues to be considered a modern marvel.

Ride along as Horseshoe Curve takes you on a captivating behind-the-scenes railroad journey in Pennsylvania's Allegheny Mountains. Trackside views allow you to see first hand some of railroading's ...