Order a boozy baba au rhum at the oldest patisserie in Paris.

Noirish green neon marks the location of one of the oldest private detective agencies in France.

This tower is one of the best-preserved (and least-visited) remnants of medieval Paris.

The tallest church in Mechelen might have been the tallest in the world if not for a lack of funds.

This residence straddles a border between Belgium and the Netherlands.

A maze of crosses marks the jumbled divide between the Netherlands and Belgium.

A dramatic art installation features a BMW flying out of a building in Rotterdam.

Portraits of musicians line Oude Binnenweg, the jazziest street in the city.

This charming pup is meant to celebrate the youth and stubbornness of the city's students.

Rotterdammers' dirty minds gave this Santa a dirty nickname and cursed it to a life of wandering.

A nearly 25-foot concrete sculpture of Sylvette, Picasso's muse.

These lights mark the area of Rotterdam that was bombed and burned in 1940.

Old ships and machinery fill a historic harbor in the city that's home to Europe's largest port.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

Lumps of significant stone from around the world surround a flaming monument for peace.

Amsterdam's former hotspot for public executions and dissections.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The history and future of cannabis.

A beautifully eclectic mix of architectural styles.

This unusual elevator doesn’t stop or slow down.

Europe's official "zero-level," the equator of elevation.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

A public urinal so pretty, it was declared a national monument.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.