Stalactites and stalagmites in a beautifully lit cave.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

An alchemist's "magic door" stands in the middle of a Roman park.

A submerged archeological park still holds the wonders of a Roman Sodom.

A 16th-century horror show built in a lovely Italian garden.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

The remains of an abandoned air force hospital located on a redeveloped Air Force base.

Church organ in the Philippines constructed out of bamboo.

The once-grand remains of this resort are slowly turning into the strange ruins of the future.

A cemetery and the town it served sinks beneath the sea during the volcanic birth of Mt. Vulcan.

The abandoned medieval theme park was meant to be the "Disneyland of the Philippines."

The ruins on a deserted tropical island in the Philippines bear the scars of WWII.

Smoked mummies housed in mountainside caves.

Hundreds of wooden coffins dangle from cliffs and caves in the Philippines.

Part shoe store, part sociopolitical art gallery, part zoo.

Giant pigeon houses packed into city streets in Egypt.

A strange aquarium with stuffed fish, and almost no water for them to swim in.

The deadliest diving spot in the world is also a stunning geological marvel.

An abandoned outdoor movie theater in the Sinai desert.

Egyptian treasure trove of fossils documenting the whale's transition from land mammal to sea creature.

What looks like a normal building is really a hollow facade hiding a subway vent.

Dedicated to the history and culture of smoking, this small museum now includes a vape lounge.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

BDSM, 1930s Style.