Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

The monster at the center of the Darwin Center Spirit Collection.

The largest stone circle in the world has ended up bringing up more questions than it has answered.

The true age of this ancient stone circle is unknown, but its stunning vista isn't in question.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

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

Abstract dinosaur models in London.

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

A 200-year-old prison that now houses a peculiar crime museum.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

One of the world's largest collections of pathological specimens.

Hidden behind a wall for decades, this masonic lodge was only rediscovered during renovations.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

Repository for more than 22 million pickled specimens.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

Scattered throughout London are ancient remnants of the city's former bounding wall.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

The remains of Crystal Palace Great Exhibition of 1851.

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

A cluttered and astounding collection of antiquities and curiosities.

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

Catacombs turned marketplace.