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

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

Collection dedicated to brands, packaging and advertising.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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

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

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

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

Repository for more than 22 million pickled specimens.

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

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

Hear the quietest sound from across the dome.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

This 1920s Dutch barge is now a floating bookstore.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Rebuilt remains of a temple to Roman god Mithras.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

An unusual round church in London with a Templar past.