A memorial museum to the political prisoners who were held at Sighet Prison, once one of the most feared places in Romania.

A medieval church built up to defend its village.

Something's watching you.

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

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

Gigantic Romanian salt mines used to heal respiratory conditions.

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.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

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

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

A fake Transylvanian castle houses a cathedral of antlers.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

Once the home of a hermetic monk, this cave now houses a small church.

This Budapest bar allows drinkers to leave their mark on the walls, floor, and even ceiling.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

One of downtown Berlin's last reminders of its Communist past.

Every hour the doors open to reenact the legend of the heroic mayor who saved his town by drinking a gallon of wine.

Cold war icon and onetime "hole" in the iron curtain.

Originally envisioned by King Ludwig II to rival Versailles, Herrenchiemsee's "New Palace" remains half-gilded for lack of funds.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.