Every year, the colorful murals of Montreal get a complete makeover.

A French artist's vague warning hangs over Belleville.

Stroll through retro Paris while shopping for old postcards and discarded doll heads.

A historic Montreal market that was the city's agricultural hub for over century.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

The Sun King's military models, saved from the Louvre.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Experience architect Le Corbusier's modernist design for living in the home he designed for himself.

It's good luck to be mocked by this monkey.

This massive library holds what was once the largest book collection in the world.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

A museum which takes visitors to the côté obscure of Paris.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

This folk museum is devoted to small figurines of provincial village life.

The first green space constructed on an elevated viaduct.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

A haunting collection of the vanished and disappearing natural world.

This museum houses an imposing skeleton army comprised of creatures great and small.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

Tucked in a nondescript downtown Brooklyn mall is a bar containing a remarkable turn of the century anatomical wax collection last seen in 1920s Berlin.

America's oldest Eastern European synagogue provided the immigrants of crowded Lower East Side tenements a space of sanctuary.