On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

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

A museum wholly devoted to juvenescence.

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

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

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

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

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

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

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

Hear the quietest sound from across the dome.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Public access to clean drinking water was an instant hit among the masses.

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

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

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.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

The pockmarks across the building's facade are remnants of the Blitz.

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