The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

A giant time capsule not scheduled to be cored until 2040.

The 570-ton boulder that gave a New Jersey town its name.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

This tower was once used to create ammunition for early settlers.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

A former mental hospital founded in the 1930s by a eugenicist who advocated for the forced sterilization of patients.

A full-service gas station known as the oldest in America.

Behold the rickety glory of one of the oldest roller coasters still standing.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

Narrow gorges and deep pools created by long-ago glaciers.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

An underground blaze turned this village into a ghost town.

A eight-foot-tall statue resides in the heart of Pennsylvania anthracite coal country.

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

A forsaken wonder in the middle of the East Side neighborhood.

A natural gas leak provides a flickering flame beneath a waterfall.

The land is home to swimming ponies and a legendary 18th-century treasure.

A desiccated merman and a walrus penis bone are among the oddities in this eclectic collection of shipwreck treasures.

The Dover International Speedway is home to a towering, concrete-skinned, racecar-hungry behemoth.

Once used as a deterrent to drinking alcohol.