This Italian foot path winds through the mountains via 52 individual tunnels.

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

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

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

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

Five candy-colored villages on the Italian Riviera.

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

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

The middle finger of modernity.

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

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

The anatomical-pathological collection of a man who changed surgery.

Famously misunderstood wonder of the ancient world

The personal library of the founder of modern neurology is open to visitors.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Indents in the pavement are all that remain from a grisly death machine in Paris.

The largest medical and anatomical collection in France lies hidden from the public.

Statue of death tucked in the University of Medicine courtyard.

Paris' linguistic guide to the international language of, yes, love.