Located just behind a quiet residential neighborhood, this is ground zero for the Salem witchcraft hysteria of 1692.

More than 300 years ago, a revolt at this Hopi pueblo shaped the future of the American Southwest.

One of the American Southwest's most extensive collections of Navajo rock art.

More than 21,000 images fill this overlooked gem of a prehistoric site.

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

Preserving the remains of Native American cultures which otherwise would have been submerged behind Hoover Dam.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

This enormous World War II relic is one of the largest wooden structures in the world.

These ruins of a sacred Ancient Greek temple stand next to a luxurious modern resort.

This colonial town in Colombia sits around the largest stone paved square in South America.

One of the largest and oldest caravansaries in Persia.

A small museum full of giant effigies of Bali's demons and monsters.

It's believed King John of England stayed at this 13th-century castle before riding off to sign the Magna Carta.

Overlooking the harbor is a beautiful neglected mansion guarded by two Egyptian sphinxes.

This ruin in a suburban park may be the place where Shakespeare's "A Midsummer Night's Dream" was first performed.

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Caves famous for the dragon-slaying saint who lived there.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

Odd outsider art installations surround a Gold Rush-era ghost town.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The haunting peak of an old church is all that remains of a drowned Brazilian city.