Mummified monks and the accidentally interred, in a 17th-century crypt.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Known as the Hintz House, this medieval pharmacy has been an apothecary's haven for nearly 450 years.

A giant portrait of an ancient king looms over the river.

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

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

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

Unique house covered in a nightmarish mural of demons, ghosts and monsters.

Microscopic scenes; some call it novelty, some call it art.

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

A church of bones, decorated with 40,000 human skeletons.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

Taxidermied animals galore, by appointment only.

A famous burial ground with a history both grim and literary.

London's largest outsider art museum.

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

Eclectic final resting place of the controversial explorer.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

English antique dealers with a taste for the unusual.