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

A beautifully eclectic mix of architectural styles.

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

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

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

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

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

A unique collection of gilded age mechanical pianos.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

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

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

The deepest metro station in the world.

340-foot statue built to honour the Heroes of the Soviet Union.

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

The oldest museum in Russia is home to a fascinating collection of nearly two million anthropological artifacts and anatomical curiosities.

World's largest bell sits on the grounds of the Kremlin in Moscow.

Moscow's imposing monument to the Space Age.

To enter this cluttered-yet-cozy sanctum of Belgian brews, ring the bell and tell the gatekeepers you've come “to taste beer.”

This vast collection of smoking pipes from across the world spans centuries.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large park in Dublin.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.