These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

The final resting place of a German diplomat's beloved companion.

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

The Florence Nightingale Museum is home to the famous nurse's most treasured possession: her beloved pet owl.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

One of the world’s leading and most extensive archives on the Holocaust, the Nazi era, and genocide, this collection includes published and unpublished works, press cuttings, photographs, and eyewitness testimony.

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

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

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

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.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

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

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

One part local history, 99 parts gruesome haunted house.

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

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

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.