Home to three historic ships from the age of Vikings.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

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

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.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

Cat art as far as the eye can see.

A floating cat sanctuary on an Amsterdam canal.

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

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

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

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

Though they've since been renamed, these two streets hint at Dublin's darker days.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.