The remains of a failed attempt at medieval nerdery are hidden deep in the woods of Virginia.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

An Australian lake whose pink hue defies scientific explanation.

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

The atmospheric road was never meant to be so creepy.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

A submerged archeological park still holds the wonders of a Roman Sodom.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

Home of an evil witch famous within southern folklore.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

A beautiful 62-acre Catholic shrine and botanical garden.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

An ancient capital city that dates back 3,000 years old and harbors many surprises.

Famously misunderstood wonder of the ancient world

A beautiful Victorian-era cemetery, complete with a miniature village.

Stroll through a wonderland of stupendous moss-covered trees.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.