The largest earthwork effigy in the world.

Once the most densely populated place in the world, this island is now a ghost town.

Walk through Czech history in Prague's largest graveyard.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

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

The rocks in this arid basin leave trails of movement behind them.

All that's left of the quintessential "cabin in the woods."

Staves, storm-calling, and of course, necropants.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Rebuilt remains of a temple to Roman god Mithras.

Take a drunken tour inside the world's largest known geode.

A haunting collection of the vanished and disappearing natural world.

Museum preserving torture methods from the past.

Bigfoot prints, Feejee mermaids, and haunted dolls on display in a tiny North Carolina town.

The beautiful baroque library of the Hapsburg empire.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

A toxic ghost town sitting atop a massive coal fire.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

Hot springs monkey spa in the middle of Hell's Valley.

Continuing the tradition of the dime museum in style.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.