The Sighignola summit on the Swiss border offers views so breathtaking it's been named one of the most beautiful places in Italy.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A historic observatory precariously perched at the "Top of Europe."

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Historic medieval fortified city in southwest France.

This stunning natural double arch, the largest in the Alps, went undiscovered until 2005.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The mental institution where Van Gogh created some of his most famous work now allows guests to walk in the artist's footsteps.

A beautiful and classically designed villa, with an hourly infestation of monsters.

An icy lake tucked among jaw-dropping alpine panoramas.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

One of the greatest maze designer’s greatest mazes.

This Parisian café sticks almost exclusively to an ethos of reuse.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Paris' linguistic guide to the international language of, yes, love.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

A German town is growing a building out of trees.

An ornate century-old elevator still connects the two halves of Bad Schandau.

The world's most delightful not-NOT-religion welcomes visitors to the town of Templin, just like its more stoic peers.

Hamburgers are intensely proud of their tunnel beneath the river.

Bursting forth from a historic German neighborhood, these day-glo palaces are now a bright fixture in the town.

This painted Lego bridge is the product of over a century of locomotive history.