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

Oldest Museum of the Netherlands is a true cabinet of curiosities.

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

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

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

A unique work of automotive art calls this shopping center home.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

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

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 unattributed sculpture in Amsterdam is hiding in plain sight.

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

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

Amsterdam's former hotspot for public executions and dissections.

The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

A mysterious demonic figure peers down from its perch within the gorgeous Chester Cathedral.

Once the last route taken by condemned prisoners.

The western face was supposedly left clock-less to snub the Welsh.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

The oldest licensed distillery in Ireland.

This ancient Irish landscape boasts hundreds of legendary ruins.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.