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.

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

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

Amsterdam's former hotspot for public executions and dissections.

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

Above the heads of passersby stands a small statue commemorating soldiers from the Boer War.

The former headquarters of history's oldest megacorporation.

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

The 20th-century chapel’s intricate woodwork includes amazing details, most notably angels playing bagpipes.

This city square dates back to the Scottish Enlightenment and was home to some of Scotland's brightest minds.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

A roadway designed for a visiting monarch.

This obscure walkway links Edinburgh’s Old Town with one of the city's prime vantage points.

Neon artworks light up this dark Edinburgh tunnel.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

This Scottish graveyard is the final resting place of the man who inspired the character Ebenezer Scrooge.

Inside this cathedral is a shoulder bone belonging to the Patron Saint of Scotland.

A bronze statue of a low three-legged seat commemorates a piece of furniture that started a riot.

A sweet symbol marks the place where torturous executions were once carried out.

A quartet of brightly colored mythical beasts stand sentry at this gateway.

Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

The location of a citizen uprising that led to a gruesome act of mob justice.