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

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

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

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

In one of the smallest countries in the world stands an original Salvador Dalí sculpture.

Some of the smallest works of art in existence.

This Transylvanian church has changed its denomination four times.

Seventy-five miles of limestone caves host more than a million bottles of wine beneath a sleepy Moldovan town.