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

Ancient snack bar of the Roman Empire re-opened.

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

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

The Pope’s secret escape route.

Breathtaking and huge 430 year old maps of Italy.

Historic medieval fortified city in southwest France.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

The world's biggest floating museum in Gothenburg, Sweden.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Cold war icon and onetime "hole" in the iron curtain.

A historic observatory precariously perched at the "Top of Europe."

Large Hadron Collider and the Birthplace of World Wide Web.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

Carved fountains poignantly placed in parks and in front of special monuments.

Copenhagen's celebrated theme park and gardens.

Come for the flowers, stay for the bats!

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

This bridge was constructed from the rubble of the infamous Bastille.