An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Spiral alpine structure provides an alternative experience of viewing the Matterhorn.

The excellent Swiss museum of witchcraft is led by a modern witch.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

A breathtaking bridge that crosses a vast gorge over a river's torrents, and has a tale of a devil architect attached.

This lovely little bridge hidden in a Switzerland gorge is essentially a fairytale.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

Caves famous for the dragon-slaying saint who lived there.

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

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

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

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

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This solitary monastery may hold the remains of Vlad the Impaler (but probably not).

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

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

When a supermarket opened up shop within a medieval building it became protected by UNESCO on a technicality.

This Croatian island is for sale but no one is buying due to the dozens of accused Nazi sympathizers who were massacred there after WWII.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.