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

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

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

A beautiful mountaintop mausoleum devoted to a Montenegrin icon can't seem to make everyone happy.

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

This tiny Bulgarian town offers a stunning location in the mountains and a storied history.

This historic black and white monastery is one of Bulgaria's architectural jewels.

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

Even drowned in an ocean of toxic waste, the remnants of this Romanian village stand tall.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This massive underground salt mine now holds a sci-fi theme park in its depths.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

A miniature city, once ruled by the Queen of the Netherlands.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Baroque celebration of the end of the Great Plague of Vienna.

A self-built mosaic house and sculpture park.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.