London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The television series' iconic giant foot was borrowed from this classical painting.

Surreal riveted sea forts once protected the Kent shores from German attack.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

360° views of the city plus five floors of optical illusions and hands-on science.

Famously misunderstood wonder of the ancient world

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The sign at the garden gate reads: "These Plants Can Kill."

A Romanesque tower appears when water levels drop.

This house's itty bitty size means no humans allowed.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This Scottish bridge seems to compel dogs to leap to their death.

The patron saint of spinsters grasps a container of dried blood.

This "floating railway" is one of the world's oldest monorail systems.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

A toxic ghost town sitting atop a massive coal fire.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Mysterious meeting place for UFO hunters near Area 51.

This unusual statue overlooking the Royal Mile has an interesting backstory.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

A memorial to the beloved brown bear that served in the Polish army during World War II.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Ruins of a German Castle on top of a towering stone pillar.