A faded reminder of what was once a common sight in London during the Blitz.

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.

What started as a way to address damp basement walls turned into a house filled with intricate hand-carved designs.

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

This ancient oak plays host to carvings of magical elves, gnomes, witches, and other creatures prominent in local folklore.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

The sculpture of the deceased cockatoo flops atop its personal plinth.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

A famous burial ground with a history both grim and literary.

A domino effect created with Britain’s iconic telephone boxes.

These morbid carvings remind churchgoers of the inevitability of death.

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

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.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A relic of Victorian grandeur hides beneath a busy South London road.

This home on a quiet suburban street is completely covered with vibrant mosaics.

This secluded walkway overlooks a magnificently wild London green space.

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

Giant, friendly pelicans in Central London, the most unlikely of places.

This coffee shop lies hidden beneath a historic church.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

An artistic tribute to the famous singer, just around the corner from where he was born.