The secret medieval communication system will whisk your words above the noise of the crowd.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

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

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

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

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

Erotic art covers the walls of the largest ancient pleasure palace.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Medieval torture techniques with a modern conscience.

An ancient artistic garden parlor full of hidden water wonders.

This winding road through an Italian canyon may be the most scenic drive in the world.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

Romans built the world's tallest artificial waterfall in 271 BC.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

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

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

Natural cathedral designed by Italian artist Giuliano Mauri.

David Sedaris called it "The greatest shop in the world."