According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

The iconic castle that withstood a magnitude 6.2 earthquake has become a symbol of resilience.

Carved into a towering rock mountain in Al Ula, this once served as a religious and political center in Hegra.

This site was once the religious, cultural, and trade center of Sri Lanka.

The buildings are among the few Frank Lloyd Wright structures still standing in Japan.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

This curious, round temple is the oldest still-standing marble building in Rome.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

The yawning maw of this pagan visage is said to bite off the hands of liars.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

A small museum in Newfoundland is home to a 227-foot tapestry that preserves the remote region's colorful history.

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

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.

A swaggering, monumental souvenir of the most extravagant party Montreal’s ever thrown.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.