On the eve of a condemned prisoner's death, this bell rang 12 times outside their cell.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

This historic building displays the remains of a victim of the devastating 14th-century plague.

A quiet memorial to those who died saving others in the heart of the City of London.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

An incarceration museum on the spot of possibly the oldest prison in England.

This South London cemetery holds the remains of more than 15,000 people.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

The Great Fire of London and the regulation of one-way streets both started in this alley.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

Tucked away in the Tower of London is the weapon once used to execute high-profile prisoners.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

This sculpture, residing in a quiet corner of a London park, honors the victims of 9/11.

A place of remembrance for the Prime Minister that met a violent end.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

Where condemned pirates met their grisly end at the gallows on the River Thames.

This memorial is dedicated to the legendary suffragette, who stepped in front of the king's horse during the Epsom Derby.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

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

A Victorian park cemetery, standing on the site of what was once the Great North Wood.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."