Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This Stone Age solar temple aligns with the sun on each equinox and solstice.

The largest caravanserai in Cyprus also includes amazing examples of Ottoman architecture.

This no man's land slicing through the island is strewn with abandoned relics of another time.

An ancient necropolis of magnificent tombs.

A Byzantine church containing the holy remnants of three saints sits atop the site of an ancient temple.

The oldest standing Byzantine church in Athens is tucked within a monastery in the middle of an upscale shopping district.

A small island with shimmering pink sands, home to loggerhead turtles and rare plants.

An abandoned Byzantine fortress and notorious prison.

This abandoned Greek island was the last active leper colony in Europe.

Where commuters walk through remnants of an ancient Greek necropolis.

Replicas of Apollo's leonine stone guard cats still line a sacred row in Greece.

Giant marble phalluses on the sacred island of antiquity.

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

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

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Gigantic water vessel, permanently grounded in Southern Albania.

Once the fallout shelter of a dictator, this sprawling bunker is now a combined history museum and contemporary art gallery.

What happens when you cross a mayor and a painter?

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.

Hundreds of thousands of concrete bunkers crowd Albania long after the fall of Communism.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A naturally beautiful, seemingly bottomless deep blue spring.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."