A series of abstract, silly sculptures represent the works of a great modern classical composer.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

The first green space constructed on an elevated viaduct.

A mechanized clock where a man fights off a dragon, crab, and rooster.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

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

This modest marker near Notre Dame identifies the very center of Paris.

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

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Notorious artist squat renovated into legal studios.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

A towering baroque basilica jutting out of the French countryside.

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

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

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

Forget the hearse ‘cause he’s forever immortalized in a Belgian city where AC/DC performed a secret gig that pushed them forward.

A monumental toilet that is also host to rare plants.

This Belgian observatory bears a striking resemblance to Futurama's Planet Express building.

An installation that makes understanding the size of the universe a walk in the park.

The former home and studio of Belgian artist Antoine Wiertz is now a museum dedicated to his work.

A mural recalls a fictional woman who once lived at 23 Quai du Commerce, 1080 Brussels.

Not many houses move across borders, this one did it twice.

This historic Art Nouveau townhouse was the former home of the son of a famous chemical inventor and industrialist.