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

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

This ancient market is often referred to as the oldest shopping mall in the world.

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

A fairy tale castle in modern Rome.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

Pilgrimage site for star-crossed lovers.

Five candy-colored villages on the Italian Riviera.

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

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

The middle finger of modernity.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome’s legendary peephole vista is also a former Crusader stronghold.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

2300-year-old Roman road connecting the empire.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

Once known for its horse-powered knife sharpening, this 200-year-old shop offers an array of blades and hard-to-find culinary tools.