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

This building once stood at the center of a butter war.

This residence straddles a border between Belgium and the Netherlands.

Stained-glass windows inspired by Vincent van Gogh's paintings decorate this church in the town where the artist's career began.

Museum in a swimming pool where the water still flows.

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

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

Indents in the pavement are all that remain from a grisly death machine in Paris.

Dedicated to the history and culture of smoking, this small museum now includes a vape lounge.

How did a French journalist’s grave become the sexiest statue in the cemetery?

A lone cannonball remains lodged in the walls of the Hotel de Sens as a sober reminder of a revolution.

An unusual number plate signifies the building's saucy past.

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

A surrealist timepiece by the artist of melting clocks.

This 400-year-old tree is actually an immigrant from North America.

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

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

Stripes of human ashes cover a back lawn in the most sought-after burial grounds in Paris.

A museum dedicated to one of Paris’s most famous residents, tucked into a corner of one of the city’s most famous squares.

The first green space constructed on an elevated viaduct.

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

Head underground and take a tour of the city's working sewer system, and see the underground river Senne, which defined Brussels for centuries before being covered in the 19th century.

Belgium’s famous peeing statue has worn many hats (and coats, and pants), which are on display at this small museum.

A little sculpture with a large wardrobe.