Pompeii's less famous neighbor is still revealing her secrets.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

This glass skywalk offers vertiginous views down the volcanic cliffs to the beach below.

These small, triangular, colorful houses are a staple of Madeira Island.

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

A micronation on an islet along the coast of a Portuguese island.

This colorful statue welcomes visitors to a Barcelona park.

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

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

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

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

This bridge was constructed from the rubble of the infamous Bastille.

The celebrated eyesore created by starry-eyed sweethearts.

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

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Possibly the oldest living thing in Europe, more likely a pagan survivor.

This ruined castle is said to be the legendary keep of a Viking princess.

One man spent 10 years building a spectacular section of road because no one else would.

Eyam took steps to quarantine themselves and keep the plague from spreading.

A creepy tree with a local legend that inspired a nearby theme park ride.

Three bridges straddle a stream, one stacked upon the other.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.