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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The Emperor Tiberius' palace of debauchery.

The entire known universe of the ancient Etruscans is held inside this bronze model of a sheep’s liver.

A sudden, striking cluster of hills south of Padua has been attracting visitors for centuries.

Pompeii's less famous neighbor is still revealing her secrets.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

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

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

Hidden in an Italian forest is a completely homemade amusement park that has taken a lifetime to create.

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

A wood-and-steel sculpture garden featuring an artful interplay of nature and machinery.

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

These "anatomical machines" are only one of the many strange items in this Italian crypt.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Skulls from the plague of 1656 and World War II bombings are united by a cult dedicated to caring for the ancient dead.

Ancient cave tombs known as the "houses of fairies."

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

Mysterious tombstones thought to be remnants of Atlantis.