Elevated freight railway turned wildly successful urban park.

The video game-themed street art first popped up in the French city.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

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

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This Parisian café sticks almost exclusively to an ethos of reuse.

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

Notorious artist squat renovated into legal studios.

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

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

Gods clash with machines in a power plant regenerated as a museum.

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

A huge enchanting public park just outside the ancient walls of Rome.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

This abandoned Brutalist treehouse is a hidden architectural relic.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

A hospital where antique dolls are given new life.

A Nesting Doll of Churches.

Pilgrimage site for star-crossed lovers.