Greenwood Furnace State Park sits in a narrow valley in Huntingdon County, Pennsylvania, where a thriving iron furnace community once operated from 1834 to 1904. Today, the park’s 423 acres preserve that industrial heritage alongside some of the most peaceful recreation in central Pennsylvania. The historic village — including the original iron furnace stack, company store, and church — earned a spot on the National Register of Historic Places, making this one of the few state parks where you can walk through a genuine 19th-century company town.

Greenwood Furnace Lake anchors the park’s warm-weather activities. The six-acre lake offers swimming at a guarded beach, fishing for trout and panfish, and non-powered boating. Hiking trails wind through the surrounding Seven Mountains region, connecting to the expansive Rothrock State Forest and the Mid State Trail for longer backcountry adventures. In winter, cross-country skiing and snowshoeing take over the same corridors.

The park hosts a variety of outdoor activities suited to day visitors and overnight guests alike. Established in 1924, it has had a century to mature into a well-maintained destination with reliable facilities.

Spring wildflowers and fall foliage are the standout seasons here — the surrounding hardwood forest puts on a particularly vivid show in mid-October. Summer weekends draw families to the lake, so weekday visits offer more solitude. If you’re drawn to places where natural beauty and American industrial history overlap, Greenwood Furnace delivers both without the crowds of better-known parks.

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