A modern sliver of architecture in Roma.

Breathtaking and huge 430 year old maps of Italy.

The Pope’s secret escape route.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

This emotive sculpture was originally created for the 1878 World's Fair.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The final resting place of the "father of special effects."

How did a French journalist’s grave become the sexiest statue in the cemetery?

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

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

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

A lush indoor jungle fills this bustling Madrid transportation hub.

The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

An ancient Egyptian temple in the middle of Madrid, Spain.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

The prototype for all Nazi concentration camps.

Legendary site where an evil bishop was devoured by rodents.