A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

This scenic Maryland park was the site of one of the worst prison camps of the Civil War.

The ruins of this long-abandoned unsuccessful gold mine can still be found.

A girls' boarding school inspired by the Chicago World's Fair, once abandoned, now restored to strange and scenic glory.

Bizarre Cavern.

Eighteen miniature death-scene dioramas.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

Remnants of a storybook amusement park hidden behind a strip mall.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Where America's first doomsday cult awaited the end of the world.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

An abandoned asylum once on the cutting edge of lobotomies may be reborn as a Christian college.

The ruins of this Thomas-Jefferson-designed mansion have been left to crumble since the Christmas Day they burnt down.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This free, take-a-book shop seems like a trick but isn't.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

This abandoned asylum was once a state of the art facility before devolving into one of the most deadly mental institutions in American history.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

An acoustic anomaly with a mysterious cause.

This abandoned amusement park was built on a site with a dark history.