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

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

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

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

This 1920s Dutch barge is now a floating bookstore.

The monster at the center of the Darwin Center Spirit Collection.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

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

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

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

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

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

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

One of the world's largest collections of pathological specimens.

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

The remains of Crystal Palace Great Exhibition of 1851.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

The final resting place to 300 Victorian-era pets hides inside the city park.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

The anatomical-pathological collection of a man who changed surgery.

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The largest of London's subterranean rivers and once a mad, bad center of London life.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.