A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Giant busts of 42 U.S. presidents sit, crumbling in a field in Virginia.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

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

There aren't too many operational funiculars around, but Pittsburgh has two!

Yo, Adrian!

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

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

A toxic ghost town sitting atop a massive coal fire.

The world’s first penitentiary, meant to be humane, drove men insane.

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

The world's largest rotating world.

This tiny patch of arid sand sits in one of the greenest states in the United States.

The eccentric mansion of one of the most popular horror authors of modern times.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

A seemingly endless landscape of pure salt stretches far across Bolivia.

The soaring gondola lines form the longest aerial cable car system in the world.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

An Inca spa, military outpost or maybe… both?

A Christian monastery stands on what was once a holy Incan temple.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

A painting in the historic Cathedral Basilica depicts Jesus and his disciples dining on a traditional Peruvian menu.