Ancient ruins hidden underneath a modern luxury hotel.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

A huge enchanting public park just outside the ancient walls of Rome.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

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

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

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

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

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

The Pope’s secret escape route.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

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

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

Architectureal fantasy quarter of Rome.

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

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

"Only the devil could play golf here."

Odd outsider art installations surround a Gold Rush-era ghost town.

An exotic wildlife habitat right off The Strip.

A giant open-air sculpture made of over 200 full-sized boats.

The tallest hotel in Europe.

The gorgeous entrances into the city's underbelly look more like grand halls than subway stops.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

This chimerical bridge/tunnel appears to dead end right into the sea.