This plaque in one of London's oldest public hospitals commemorates the first meeting of two of Britain's most famous literary heroes: Sherlock Holmes and Dr. Watson.

King of the Saxons on top, Roman goddess of wisdom on the bottom.

This artificial lake surrounded by Brutalist architecture served as a stand-in for futuristic Britain in Stanley Kubrick's 'A Clockwork Orange.'

Preserved behind glass, the ruins of a medieval building used to store human remains.

This underpass became an unlikely piece of cinematic history after its appearance in 'A Clockwork Orange.'

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and most extensive archives on the Holocaust, the Nazi era, and genocide, this collection includes published and unpublished works, press cuttings, photographs, and eyewitness testimony.

According to legend, this tomb holds the secrets to time travel.

Legend has it this gnarled old tree was planted by Tsar Peter the Great during his visit to London.

This peaceful park with centuries of history hides in an overlooked section of South London.

The medieval woodcut-style artwork chronicles life in medieval London.

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

The bones of two medieval royal lions were discovered at the historic fortress.

This Underground station has been a popular filming location for decades, even before it closed.

Legend has it that seven Anglo-Saxon kings were coronated on this stone, located in the appropriately-named town of Kingston.

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

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

This may be the last of London's wooden pavements, which were once a common sight in the city.

This ancient Egyptian obelisk still bears the wounds of World War I.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

Sculptor Antony Gormley used chaos theory and fractal growth to design his tallest creation.

A 1950s beatnik coffee house, turned 60s counterculture hotspot, turned modern music venue.

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

One of the figures in this Celtic sculpture continues to puzzle archaeologists.

Murals of the wild parties once held on the frozen River Thames.