Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

Decaying 18th-century church converted to a single-family home.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

The world's most famous cheese caves.

An abandoned 18th century manse looks like something out of an Indiana Jones movie.

The world's longest covered bridge is a quaint and incredible wooden tunnel.

France's most famous cemetery, with some of its most curious tombs.

A psychedelic labyrinth on the San Francisco bay.

The prototype for all Nazi concentration camps.

Giant WWII fortresses that fired 8,000 rounds a minute, now home to thousands of pigeons.

The trials and tribulations of marking Poe's grave.

This splendid tomb may look fantastic, but there's nothing in it...

This museum houses an imposing skeleton army comprised of creatures great and small.

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

An abandoned castle owned and ignored by Masons carries a cursed history.

A small island abbey is the final resting place of many medieval Scottish monarchs, including the real Macbeth.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

Tour the original street level of Port Angeles, buried underground in 1914.

The mountaintop wind turbine boasts a viewing deck — and a fair share of controversy.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.