Down a pint of ale where the Bishop of Ely's servants slept in 1546.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

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

The real clothing store that inspired a fictional spy organization's front.

Heralded as the oldest statue in London.

A plaque marks the underground site of one of London's "lost rivers."

An eccentric Victorian aristocrat's enormous collection of medieval armor and weapons from around the world.

The collection contains over 25,000 items and details the painful dental practices of the past.

This knockout museum lies in a sleepy corner of London.

This London marker celebrates the spot where the world-famous English band was founded.

Drink your espresso at a Victorian-era urinal in this underground-restroom-turned-coffee-bar.

Designed by the architect who also had a hand in crafting the Westminster Abbey and Bristol Cathedral.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

This five-star hotel was originally a swanky parking garage.

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

This overlooked street light once served as a KGB dead letter box.

A unique tribute to the millions of animals who served and died for the British military.

The final resting place to 300 Victorian-era pets hides inside the city park.