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

A fake medieval village in the middle of Turin.

Southern Italy's spinning top village.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

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

Ancient snack bar of the Roman Empire re-opened.

Medieval torture techniques with a modern conscience.

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

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

Pilgrimage site for star-crossed lovers.

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

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

Natural cathedral designed by Italian artist Giuliano Mauri.

Go inside to really appreciate this 500-year-old technological masterpiece.

Five candy-colored villages on the Italian Riviera.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

On this tiny spot of land in the middle of Lake Titicaca the only ones who do the knitting are the men.

Ancient Peruvian fertility temple or modern money-making hoax? Either way these monoliths still look like penises.

This stone complex marks the urban center of a lost civilization.

The Uros people live on floating reed islands in lake Titicaca.