A madman's personal garden filled with 1,000 sculpted heads.

Southern Italy's spinning top village.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

A sunken idol welcomes parishioners to Davy Jones' Locker.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

Giant, pink stuffed rabbit on an Italian mountain.

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.

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."

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

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An ancient church on a tiny island covered in stone bible stories has controversially been turned into a museum.

Mausoleum and Holy Seat of Antiochus I of Commagene.

A Turkish monastery tucked into a cliff wall.

An abused and forgotten metropolis, abandoned for centuries.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

Naturally protected city carved from a rock face.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

The most metal church of all time was built in record time because of an international, pious pissing contest.

Fantastic lake on the heart of a fault line.

This ancient city - home to nine civilizations - is soon to be buried under 200 feet of water.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.