This ancient theater was once the home of fierce gladiatorial battles.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

Two of the few remaining life-sized Greek bronzes were submerged in the sea for over 2,000 years.

Old Danish castle immortalized in Shakespeare's Hamlet.

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.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Art and armour fill every inch of this rich kid's Italian villa.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A medieval weapon rumored to have been used by the brilliant poet himself.

Secret refuge and museum of the Duke of Florence.

The largest and most famous wax anatomical collection anywhere in the world.

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

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

The middle finger of modernity.