The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

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

A beautifully eclectic mix of architectural styles.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

A floating cat sanctuary on an Amsterdam canal.

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

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

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

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

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

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

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.

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

The history and future of cannabis.

The former headquarters of history's oldest megacorporation.

Amsterdam's former hotspot for public executions and dissections.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

Christ's blood preserved in a Belgian town.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

A beer pipeline runs beneath Bruges.