One part local history, 99 parts gruesome haunted house.

A hands-on traveling collection of the innovative devices of yesteryear.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Private collection of art inspired by cabinets of curiosity.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Cat art as far as the eye can see.

An underwater city for the dead.

Left untouched since a double murder-suicide in the 1960s, Los Feliz murder mansion remains a neighborhood mystery.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

A book collector's dream, this Toronto bookstore has the world's first "Biblio-Mat," a random book vending machine.

A monument to the art of slicing people open.

A speakeasy takes on Chicago's drinking culture.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A curious collection dedicated to human and animal anatomy and pathology.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

Museum preserving torture methods from the past.

A haunting collection of the vanished and disappearing natural world.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

Under a glass sidewalk lie the remains of some of Manhattan's oldest buildings.

A museum and shop on Bourbon Street located in the former home of the second Voodoo Queen of New Orleans.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

A small island less than half a mile from Venice is a forbidden island with a dark and twisted past.

Once the most densely populated place in the world, this island is now a ghost town.