Considered by many to be a local landmark and treasure.

An abandoned railroad tunnel transformed into a creepy path for hikers and cyclists.

Penn State's giant bug collection.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

This roadside stand packs 300-plus varieties of tomatoes, from "Maiden's Fire" to "Kaleidoscopic Jewel."

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

The ruined remains of a coal mining ghost town are hidden within the woods.

This Old Testament garden features 100 plants from biblical times.

In which a local geological marvel becomes a quaint roadside attraction.

A park full of outsider art, created by college students studying outsider art.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.

Mysterious rocks that ring musically when struck.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

Home of a 28-foot tall stalagmite known as the War Club.

Take a steam-powered ride straight out of the past on this Appalachian rail line.

Hikers can still stroll beneath the long conveyer of this abandoned mining facility hidden in a West Virginia river gorge.

A small storefront museum explores the history and myth of West Virginia's famous urban legend.

Metal dinosaurs lurk in a sculpture garden on the outskirts of a popular resort town.

Volcanic stone sentinels stand watch at a Korean Bell Garden in Virginia.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.

The eerie ruins of a remote abandoned hamlet said to be founded by the survivors of a shipwreck.

This unique historical monument features large concrete spheres designed to resemble fallen stars.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.