The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

The small candy-colored ride is the last rooftop Ferris wheel in Tokyo.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.

This elaborate hole in the ground was built as a sacred site for an ancient civilization.

Supposedly this Ethiopian chapel holds the Ark of the Covenant, guarded by virgins who cannot leave the building.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

After 11 years of reconstruction work, Slovakia's finest hilltop chapel complex is finally reopen to the public.

Hidden just under the waters around this Turkish island are the ruins of a once great city.

These blingy, baubled skeletons lie in glass boxes inside a baroque Bavarian church.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

St. Mary's Asylum was isolated and abandoned before being converted into a Bed and Breakfast.

The sign at the garden gate reads: "These Plants Can Kill."

Breathtaking and huge 430 year old maps of Italy.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

A beautiful and classically designed villa, with an hourly infestation of monsters.

Secret refuge and museum of the Duke of Florence.

Hundreds of secret cabinets built into the walls of legendary poisoner's private work room.