The top of society once luxuriated in this world-class hotel, which continues to impress, even in ruin.

142 ceramic steps become a mosaic once a year.

Largest necropolis in the Mediterranean.

The highest waterfall in Italy is only "turned on" five times a year.

An eccentric artist's abode in this small Italian town has been transformed into a surreal temple of mosaic madness.

Built to repay the sins of the father, this church is home to one of the most valuable works of Western art.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

A unique Tuscan hideaway acts as an art mecca as well as a hotel.

Fountain where visitors can earn a license to be mad.

An Italian vineyard invites religious pilgrims to stop by 24/7 to get their drink on, for free.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

A 1,000-year-old church holds the bones of the Christian martyrs who died hiding inside it.

The oldest of Venice's plague quarantine stations, designed to keep the medieval city safe from disease.

Fortified medieval tower house with lovely roof garden.

Beautiful views and Roman-style statues on the Italian coast.

This natural gas vent certainly earns its name as the smallest volcano in Italy.

A gorgeous medieval library where the books are kept in chains.

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

Geometry and mystery come together in an epic show of octagonal masonry.

This military mausoleum captures the solemn grandeur that most memorials only aspire to.

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

People have been living in the cave houses on this Italian hillside since the Neolithic era.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.