One of the world's southernmost bars.

The second smallest castle keep in England.

Named for the biblical warrior, the largest castle in Israel actually dates to the Middle Ages.

Once the site of a 12-century monastery, this tiny island is now home to only five permanent residents.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

Camels and crocodiles share the black waters of this stunning Saharan oasis.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

A secluded fortress from the days of the Crusades that offers breathtaking views.

This scenic fortress dates back at least 2,400 years to the time of Magna Graecia.

Brace yourself for the slowest, scariest, most spectacular drive, down the Drakensberg Escarpment.

A 150-year-old steam locomotive crosses the southern half of the island daily.

Apartment complexes built into huge repurposed natural gas tanks.

A ruined castle stands atop a hill surrounded by dragon lore.

The small cliffside monastery known as the Tiger's Nest is said to be the meditation site of an eighth-century Buddhist master.

Sleep in a glass pod dangling off a cliff.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A castle perched precariously over the Crimean Sea.

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

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

These quaint French houses dangle precariously over a precipice.

A fifth-century temple improbably built into the side of a cliff.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

This remote, abandoned Soviet observatory promises spectacular views for those who can reach it.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.