A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The first archaeological site discovered by aerial photography.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

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

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

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

A hands-off space for graffiti artists to hone and display their skills.

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

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 perfectly preserved underground rooms where Churchill plotted the war against Germany.

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

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

London's smallest police station is barely the size of a phone booth.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

Artists and musicians now rule over this former rail station.

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

Banksy gives themself artistic license with this piece of London street art.

A five-story homage to tea times past.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

East London art gallery showcasing contemporary art from Europe's Eastern Bloc.

A wellspring of creativity in an already artsy East London neighborhood.

A celebrated bandstand at the center of what was once the worst slum in London.

Catacombs turned marketplace.