A Victorian Gothic masterpiece housing a world-class collection of rare books and manuscripts.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Museum about life, death, and cannibalism in the Stone Age.

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

Artists and musicians now rule over this former rail station.

At high tide this strange footbridge appears to have no purpose whatsoever.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

A clock designed to run with perfect accuracy for 10,000 years.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

The elaborate clockwork contraptions in this Scottish gallery create small worlds of whimsy and horror.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Islanders once used this dramatic, otherworldly landscape to hide their cattle from Viking raiders.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

The largest greenhouse in the world is home to over one million types of plants.

A cluttered and astounding collection of antiquities and curiosities.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A mysterious artist-run cabinet of curiosities and library.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

A fantastic castle rumored to be the birthplace of King Arthur.

This tangled English forest looks like something right out of a fairytale.

Hear the quietest sound from across the dome.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.