The broken skateboards that became a poignant memorial to a murdered skater.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

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

The last four extravagant street signs of London's historic banking street.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

This overlooked street light once served as a KGB dead letter box.

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

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

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

A Roman spa buried deep beneath the City of London.

Charles Babbage's proto-computer, painstakingly brought to life.

London's largest outsider art museum.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

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

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

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

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

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

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.