These morbid carvings remind churchgoers of the inevitability of death.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Two plaques commemorate the site of Shakespeare's first theatre.

Public access to clean drinking water was an instant hit among the masses.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Bronze sculpture celebrating the relationship between Churchill and Roosevelt.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Pop culture has helped to keep this iconic British building from being destroyed.

A Roman spa buried deep beneath the City of London.

Dictionary Johnson’s favorite feline.

A naturally mummified 2,000-year-old man.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

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 mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

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

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