Europe's largest natural bridge has a 19th century royal chateau built into its side.

Two monstrous faces loom over a village in Czechia.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Europe's second largest ossuary wasn't discovered until 2001.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The first museum in the world devoted to sexual gadgetry.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

This eccentric folly house was designed by Romanian thinker Bogdan-Petriceicu Hasdeu, with a helping hand from his deceased daughter's spirit.

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

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

A small town Romanian cemetery filled with darkly humorous gravestones.

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

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

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Moss and stone turn this waterfall into an otherworldly liquid veil.

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

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

Modern megaliths form this work of cosmic, Celtic landscape art.

These ruins witnessed the final gathering of the failed Jacobite Rebellion.

This Scottish manor house is a lush relic from the life of a literary great.

The remains of a grand castle that may have inspired Bram Stoker's Dracula.

An American ghost town hides along a side street in Scotland's capital.