The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

The legendary birthplace of the Japanese maneki-neko is dotted with hundreds of lucky beckoning cats.

A remote candy-striped mountain in the Peruvian Andes straight out of the pages of Dr. Seuss.

The self-mummified monks of Japan.

Ruins of a 10th century church tucked away deep in a botanical garden.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

The largest and most famous wax anatomical collection anywhere in the world.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

An Escher-inspired library dedicated to the wonders of the human mind, yet closed to the public.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Storyville was New Orleans' historic red light district and hotbed of jazz music, sometimes referred to simply as "The District."

Paris' fabled purveyor of exotic taxidermy and natural history curios.

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

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

One of the ghostly stops along Route 66.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Walk through Czech history in Prague's largest graveyard.

Statue of death tucked in the University of Medicine courtyard.