This research center for rare prosimians is studying how they sleep to help prolong human life.

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

Artisans have been gathering in North Carolina since 1989 to show off whimsical takes on an everyday item.

Art Deco urban decay at this historical building.

Eighteenth century house of the mysterious "Father of Raleigh."

A legendary boxing venue and ring featured in Rocky V.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

This Pennsylvania cave holds evidence of the oldest known inhabitants of North America.

A macabre farm reserved part of its 222-acres for dead bodies, all in the name of science.

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

The graffitied ruins stand hidden within the Pennsylvania woods.

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

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

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

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

A toxic ghost town sitting atop a massive coal fire.

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

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

The largest drain hole in the world.

After funding was cut for a memorial to the Danish author, the sculptor had his statue ceremonially lowered into the city harbor.

The largest cave on the island of Menorca was likely the site of Iron Age rites and rituals.

The world's largest collection of Don Quixote-inspired art.

Beautiful scenery provides the backdrop for an abandoned coastguard facility.