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

Sleep in a climate-controlled plastic bubble for the night.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

An icy lake tucked among jaw-dropping alpine panoramas.

Historic medieval fortified city in southwest France.

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

The famous winding walk at Chartres is surrounded in mystery and myth.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

The oldest stone house in Paris was built by its most famous alchemist.

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

Week-long block party becomes a competition for the best decorated street.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This semi-secret storybook hedge maze is also the oldest garden in the city.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Every autumn, this hillside is ablaze with red summer cypress.

A restaurant modeled after feudal Japan, where the waitstaff are trained as ninjas.

The freshest fish here are the ones you catch yourself.

A massive wintry wall of snow up to 66 feet tall flanks a highway through Japan's mountains.

An exquisite tunnel of cascading flowers.

The self-mummified monks of Japan.