David Sedaris called it "The greatest shop in the world."

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

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

Abandoned medieval hill town.

The abandoned "Ghost Mansion" was left to decay in the mountains of Northern Italy.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

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

This centuries-old Italian chapel hangs midway down a sheer cliffside.

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

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Five candy-colored villages on the Italian Riviera.

A fairy tale castle in modern Rome.

This 16th-century monastery has been turned into a surrealist architecture compound.

The largest and most famous wax anatomical collection anywhere in the world.

Jesus' footprints and the first catacombs in the world.

An Italian hillside ghost town.

This quaint Italian town keeps losing ground as the sides of its plateau slowly erode.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Architectural monsters are devouring this palace's every door and window.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

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

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