Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

High Victorian fantasy created a fairytale castle out of a ruined fortress in Wales.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A miniature Italianate fantasy village on the coast of Wales and the set of ITC classic "The Prisoner."

Now harmless, this looming post struck fear into the heart of medieval troublemakers.

A musical instrument played by the sea.

The ruins of this Dutch castle sit atop a labyrinth of once-secret tunnels and passageways, dating back over 900 years.

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

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

An enormous steel waterfall is a nod to the substance that shaped Britain's Steel City.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

One of the shortest streets in York has an especially odd name.

This two-towered gateway is all that remains of the unluckiest pier in the world.

Lewis Carroll's White Rabbit or something else altogether?

This mummified mermaid corpse is an aquatic curio that was eventually revealed to be a fake.