The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

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

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

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

Pompeii's less famous neighbor is still revealing her secrets.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Two plaques commemorate the site of Shakespeare's first theatre.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

Eighty million natural history specimens call this gargantuan museum home.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

London's smallest police station is barely the size of a phone booth.

Hear the quietest sound from across the dome.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

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

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

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

A Nesting Doll of Churches.

2300-year-old Roman road connecting the empire.

Architectural monsters are devouring this palace's every door and window.

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

The final resting place of the poets Shelley and Keats.

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

Ever hear of the Milazzo Cage?