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

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

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

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

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

The history and future of cannabis.

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

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

Amsterdam's former hotspot for public executions and dissections.

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

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

The mirrored section takes the shape of Hebrew characters when viewed from above.

A beautifully eclectic mix of architectural styles.

Cat art as far as the eye can see.

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

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

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

A Baroque mansion with ties to legendary magicians and alchemists.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

Throughout this shopping mall are medieval ruins that were discovered during the mall's construction.

A historic and beautiful Art Nouveau chamber in a historic railway station.

A mocking tribute to the past and modern leadership of Prague.

This spooky statue sits outside a famous Prague theater.