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

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

An underground blaze turned this village into a ghost town.

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

These hooded graves are the only of their kind in the United States.

Construction uncovered this trove of fossils, which visitors are welcome to add to their own collections.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

A fictional town that was briefly brought to life before fading once again out of existence.

An abandoned castle owned and ignored by Masons carries a cursed history.

This once sprawling resort now sits abandoned, filled with graffiti and vibrant colors from an era long passed.

The lost town of Neversink, sunk by New York City.

This Central New York ghost town was once a prosperous railroad community.

This once luxurious Catskills resort is now a haunting ruin.

Crystal hunters can dig for their own stones at this DIY mine in Arkansas’ quartz belt.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

It's possible to walk inside one of the largest Neolithic tombs in Britain.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

This astronomically-aligned stone circle was the first of its kind to be built in Great Britain after a 3,000-year hiatus.

An overlooked and unassuming engineering marvel.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

These limestone cliffs are associated with the Greek myth of Prometheus.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.