This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

This unusual elevator doesn’t stop or slow down.

Sail in for a ’dam good slice.

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

A beautifully eclectic mix of architectural styles.

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

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

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

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A curious collection dedicated to human and animal anatomy and pathology.

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

Museum preserving torture methods from the past.

A floating cat sanctuary on an Amsterdam canal.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

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

A famous pilgrimage site that remains hidden in the midst of a city.

An eclectic art form practiced by untrained masters is celebrated at this museum in the heart of Zagreb's old Upper Town.

When Croatia became independent of Yugoslavia, the splintering governments left behind these concrete tunnels.

Legend has it fairies gathered at the site of this medieval castle.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

An ethereal glowing blue ocean cave in Croatia.

You won't find these curiously named passageways anywhere else in England.