This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

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

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

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

The history and future of cannabis.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Amsterdam's former hotspot for public executions and dissections.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

The attic of a four-century-old canal house hides a clandestine church.

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

This historic Amsterdam bar used to accept sailor's monkeys as payment.

Europe's first floating restaurant is home to a hilarious legend.

Where royalty waits in the height of luxury.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

A set of seven houses, each built in a style that represents a European country.

This plaque marks the former home of one of the first women physicians in the Netherlands.

This unattributed sculpture in Amsterdam is hiding in plain sight.

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