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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

One of seven Jewish catacombs in Rome and one of only two open to the public.

Natural cathedral designed by Italian artist Giuliano Mauri.

This magical-looking island is notorious for the misfortunes suffered by its owners.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A forgotten "city of water" underneath the famous Trevi district.

This sword isn't waiting for a king to pull it out. It was placed there by a saint.

Dug as a secret royal escape route, the tunnel became a wartime bomb shelter and dumping ground for vintage cars.

The Pope’s secret escape route.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

A hospital where antique dolls are given new life.

These "anatomical machines" are only one of the many strange items in this Italian crypt.

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

A Nesting Doll of Churches.

Geothermal waterfalls in Tuscany.

Crushed coral and crystals give the sand its signature coloration.

The glowing blue Nymphaeum of Emperor Tiberius.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

Drink wine handed out through a window as part of an age-old tradition.