A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

An architectural oddity hides in plain sight on this iconic London bridge.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

This secluded walkway overlooks a magnificently wild London green space.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

Pop culture has helped to keep this iconic British building from being destroyed.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A hands-off space for graffiti artists to hone and display their skills.

Banksy gives themself artistic license with this piece of London street art.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Birthplace of the "Cat in the Cradle" and a cluster of iconic, original windmills that let the Dutch tame the seas.

An enormous Polaroid picture adds an artistic flair to Rotterdam.

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

A statue of the second-tallest Dutchman in history.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

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

This cheese shop also houses a museum devoted to Dutch dairy.

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

A beautifully eclectic mix of architectural styles.

The world's only museum devoted to the wonders of fluorescence.

The history and future of cannabis.

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

An amazing collection of rare wind instruments where visitors can give the iconic Swiss Alphorn a toot.