Something's watching you.

The bust of Romania’s most notorious ruler, Vlad Dracula aka "Vlad the Impaler," keeps watch over the ruins of his medieval court.

One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

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

The romantic botanic tunnel feels like a well-kept secret.

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

No one knows who built this strange cave of worship or exactly why.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Double spiral staircases are not unheard of, but they are very rare.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

An Icelandic island full of diving birds and legend.

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

Inside this museum, visitors venture through ghost stories entrenched in Icelandic folklore.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Eighty million natural history specimens call this gargantuan museum home.

Two volcanic lakes in an enormous crater formed in a prehistoric eruption.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

This church is named for one of the most dramatic tales in the early Christian church.