The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

This foolish Victorian sea fort was converted to a deluxe hotel.

A former hen house turned curiosity cabinet displays one man's lifelong fascination with cannibalism.

An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

This wonky bit of historical taxidermy is experiencing a second life online.

This sprawling bookstore spans four floors and has more than a million books in stock.

A comic book store that puts the marvel back in marvellous.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

This Denmark theme park is part family attraction, part experimental archaeology project.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Catacombs turned marketplace.

This South London cemetery holds the remains of more than 15,000 people.

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

Over 9,000 brains collected between 1945 and 1982 demonstrate the results of untreated mental illness.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Villas that once served as playgrounds for the rich now fall away in decay.

A lovingly curated curio shop in which the taxidermy wear newspaper party hats, and peanut shells are spread across every surface.

A whimsical sculpture garden right out of a children's storybook.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

Skeletons, medical artifacts, and other obscure and precious treasures all displayed in a wooden pharmacist's cabinet.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.