Italian cave with exceptional acoustics and an unsavory history.

This Arabesque Italian castle was built with a primitive, if ingenious, air-conditioning system.

The middle finger of modernity.

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

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The only museum with its curator—and her pets—buried inside.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

A fairytale-like medieval church perched atop a rocky cliff on Italy's "Coast of the Gods."

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

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

A new sculpture calls attention to climate change in the centuries-old city it threatens.

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

The mystic whose incorrupt corpse still attracts the faithful.

An abandoned shopping gallery built during Fascist Italy tucked in the center of Palermo.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

One of the largest squares in Europe contains an entire artificial island.

Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

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

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.