A 19th century artistocrat's mansion, turned into a library, hidden in a modern library.

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

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

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

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

Crushed coral and crystals give the sand its signature coloration.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

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

An Italian hillside ghost town.

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

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

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

Pompeii's less famous neighbor is still revealing her secrets.

Stalactites and stalagmites in a beautifully lit cave.

Renaissance villa and gardens complete with a tormented colossus.

The oldest operating pharmacy in the world features 800-year-old recipes.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

A submerged archeological park still holds the wonders of a Roman Sodom.

This Venice bookstore has resigned itself to constant flooding by keeping its books in bathtubs and boats.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Architectureal fantasy quarter of Rome.