Architectural Oddities in Italy

Vast network of air raid tunnels beneath Lombardy's capital.

142 ceramic steps become a mosaic once a year.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

An eccentric home in Sicily turns heads on a regular basis.

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

A fake medieval village in the middle of Turin.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

Production site for handmade clay bricks.

Cave shrine on Monte Pellegrino.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

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

Eighteen mummies have stood guard behind the altar of this tiny church since 1833.

Mysterious tombstones thought to be remnants of Atlantis.

Natural cathedral designed by Italian artist Giuliano Mauri.

The Pope’s secret escape route.