The historic site preserves traces of the first railroad crossing of the Allegheny Mountains. Built in the early 1830s, this railroad used 11 levels and 10 inclined planes to connect the eastern and western divisions of the Pennsylvania Mainline Canal. Remnants of the railroad, including the Skew Arch Bridge, Incline Plane No 6, stone railroad ties and stone quarry can be seen. The visitor center has models, exhibits and artifacts. Tours are given of Lemon House, built in the 1830s as a tavern. A picnic area and hiking trails are available; rangers conduct programs and demonstrations.
