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

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

An abandoned asylum incorporated into a college campus.

A particularly creepy abandoned hospital that sparks interest for lovers of the supernatural.

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

The "mysteries" of this quintessential roadside oddity were almost destroyed by neglect but were saved by fans of kitschy wonder.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The largest cemetery in Louisville is the final resting place of Col. Sanders and Muhammad Ali.

This popular pilgrimage site offers a hole filled with holy healing dirt.

These aggressively sustainable art homes look like something out of 1970's science fiction.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

A modernist landscape of water and sci-fi concrete.

The final resting place of two (or three) presidents, one vampire, and 18,000 Confederate soldiers.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

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

World's first "penitentiary," meant to be humane, drove men insane.

A layered tribute to the work of mosaicist Isaiah Zagar.

One of the oldest log cabins in America is one of the last of its kind this historic Swedish dwelling remains a piece of living history.

A local prank turned town icon.

This might just be the TARDIS of bookstores.

The first of Lancaster's "rural cemeteries."

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

The Home and murder site of the witch of Rehmeyers Hollow.