Former military fort and site of untold horrors during WWII, this island may become the Adriatic's next luxury resort.

One of the world's oldest olive trees, thought to be over 2,000 years old.

A tiny church on a man-made island in the Adriatic.

A curious cave church carved into the face of a cliff.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Some of the smallest works of art in existence.

Extensive Orthodox icon collection in Andorra.

Explore a traditional Albanian dwelling that pays tribute to the region's rich history.

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

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

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

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

A naturally beautiful, seemingly bottomless deep blue spring.

This natural crater along the coast of Jersey may take its name from the devil statues who have watched over it.

A passage grave used in neolithic rituals.

A statue erected in honor of the toadish nickname given to Jersey residents by the French.

Christianity and Islam have clashed, yet here a Serbian Orthodox church and a mosque stand together.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

This noble mash-up in eastern Luxembourg is part Medieval, part Renaissance, all castle.

This tri-part waterfall is a little bit of fairytale beauty in the heart of Luxembourg's Little Switzerland.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

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