This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

An iconic Soviet statue of working-class people.

A 360 degree battlefield experience.

Moscow's imposing monument to the Space Age.

Moscow's most popular cemetery includes the graves of numerous cosmonauts.

Former headquarters of the KGB.

This memorial complex contains several mass graves for victims of the Siege of Leningrad.

Devastated landscape used for hundreds of years by the Romans as their primary mining site.

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

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

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

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

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

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

A copy of the famous statue can be found in this Florence piazza, along with one of the most breathtaking views of the city below.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

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

Secret refuge and museum of the Duke of Florence.

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

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