The oldest botanical garden in the world that technically isn't the oldest.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

Fountain where visitors can earn a license to be mad.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

A sinister pyramid in the Frari contains the heart of the famous neoclassical sculptor.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

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

The Pope’s secret escape route.

Crushed coral and crystals give the sand its signature coloration.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.

Pilgrimage site for star-crossed lovers.

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

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

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

The final resting place of the poets Shelley and Keats.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

Venice's "Island of the Mad."