This enormous abandoned prison was once dubbed the "Bastille of Romania."

Something's watching you.

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

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The preserved arm of a third-century sorcerer is believed to have the power to lift curses and spells.

This snug medieval lane is one of the narrowest streets in the world.

A muddy alien landscape that is home to rare species of exotic plants.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

Conspiracy theories and occult legends surround this mysterious natural rock formation.

A giant portrait of an ancient king looms over the river.

This once-derelict building is now one of the most beautiful bookstores in the world.

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Real bones which are said to have belonged to a Polish dragon.

The heart of Dutch football history.

Building Men of War and Indiamen from Holland's Golden Age.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

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

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

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This clifftop arch is a natural stunner.