Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

Ancient snack bar of the Roman Empire re-opened.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

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

Erotic art covers the walls of the largest ancient pleasure palace.

The walls and streets of the ancient city are peppered with penises.

The glowing blue Nymphaeum of Emperor Tiberius.

This clifftop arch is a natural stunner.

A narrow opening between the mountains of the Amalfi Coast creates a scenic hidden beach.

This bronze boy sits on one of Capri's rocky cliffs, waving at the passing boats.

A crumbling watchtower and a lighthouse overlooks the site believed to be the Sirens' cliff in the "Odyssey."

This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

The hands on this clock appear to be created by two workers sweeping debris into careful positions.

The cutest way to stay safe in traffic.

Built by crowdsourcing, this wooden foot bridge saved a part of Rotterdam that was languishing in wait of city funding.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

An astounding collection of taxidermy, fossils, skeletons, and even a few strange live beasts.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

This monumental mural crafted nearly 40 years ago is still in perfect condition.

This statue honors the thousands of Allied avians that served and died for France during World War I.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

A melancholy jester sits on the grave of a famous 20th-century ballet dancer and choreographer.