This museum tucked below a charming cafe gives a brief snapshot of photographic history.

There's an exclusive Beefeaters pub hidden in the Tower of London.

The last four extravagant street signs of London's historic banking street.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

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

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

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

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

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

London's old-school healing garden.

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

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

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

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

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

Catacombs turned marketplace.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

A kaleidoscopic warehouse-maze of handmade neon signs.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.