Monasteries on rock pillars, once accessible only by frayed ropes.

Founded in 670, this ancient mosque is an architectural time portal.

The best-preserved Roman small town in North Africa.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

This ancient Irish religious site is covered in ancient carvings, many of which have barely aged.

Ancient Bronze Age rampart that was used into the middle ages.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A rocky Irish outcropping with a history of wealth, conflict, and ruin.

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

As the highest point in the Mid-Atlantic range this stratovolcano offers spectacular views.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Canada shows its hockey pride with a giant stick.

The original film set of Luke Skywalker's Tatooine home from the 'Star Wars' trilogy.

The world's most active stratovolcano is almost always erupting.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

Behemoth, cannon-like telescope operated by generations of Irish earls.

This ancient Irish tower could easily have stood in for Rapunzel's prison.