This studio was home to David Bowie's first single, even if it did turn away the Beatles.

The childhood home of Earth's alien chameleon is a humble Brixton flat.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

The "beautiful" equation predicting the movement of all electromagnetic particles is engraved in front of Newton's tomb.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

A 14th-century abbey founded by a forest-loving order of monks now sits in the center of a pristine nature preserve.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

Putting the "mod" in "modular" since 2000.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

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

An elaborate Romanesque archway, built right before the British occupation of Ireland.

This secret garden has bloomed into London's most unique hub of urban creativity.

The secret wartime bunker built on the platforms of an abandoned Tube station.

A network of concealed passageways lies within a busy London Underground station.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

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

This informal museum is a magical trove of anonymous art collected from car boots and flea markets.

A wonderfully preserved example of London's 1960s-style high-density, low-rise public housing.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.