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

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.

Bell tower juts out from a village buried under a lake.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

The giant skeleton sculpture is surprisingly well-traveled.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

Ancient snack bar of the Roman Empire re-opened.

Italian cave with exceptional acoustics and an unsavory history.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

The world's most active stratovolcano is almost always erupting.

Venice's island of the dead.

Erotic art covers the walls of the largest ancient pleasure palace.

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

A modern sliver of architecture in Roma.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

This half-finished "city of toys" was almost Italy's own Las Vegas.

Medieval torture techniques with a modern conscience.

An ancient artistic garden parlor full of hidden water wonders.

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