Amidst medieval and baroque buildings, five human-sized gherkins stand tall.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

This building has a giant piercing through one of its corners.

A quiet Sicilian village is home to a cafe that had an important role in "The Godfather."

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The remains of 50,000 World War I soldiers rest under a towering arch overlooking the Alpine battlefields.

A founding document of the European Union was written on an island where Roman emperors once banished women.

This small but lovely sinkhole lake is the last remnant of a great prehistoric water basin.

A stunning fountain depicting a mythological she-goat carved directly into the rocks on the grounds of a Renaissance palace.

A landmark in the history of technology and computing is hidden in a tiny Baroque chapel.

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

This high-speed test track is popular with car manufacturers, speed freaks and orbiting astronauts.

The link between these two seemingly disparate themes is crucial to the history of this Tuscan hill town.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

Production site for handmade clay bricks.

A long-buried ancient ruin unearthed right in the middle of the city.

A lonesome Moai stands in a small Italian town some 9,000 miles away from its Easter Island brethren.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

The second-highest village in Lazio has attracted artists for 400 years and is now a spectacular open-air art gallery.

This skeletal, unfinished Gothic church once housed a miraculous masterpiece by Raphael.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

An abandoned bell tower in the middle of nowhere is the last testimony of a forgotten medieval village.