The site of the most dived wreck in the UK.

This reconstructed ancient fort was home to one of the few horse training rings in the Roman Empire.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A mineral spring that became all the rage in 17th-century England.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The secret wartime bunker built on the platforms of an abandoned Tube station.

A naturally mummified 2,000-year-old man.

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

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

A Roman spa buried deep beneath the City of London.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

A house of bones — but nobody is quite sure to whom they belong.

The oldest inn in England served brew to the crusaders.

This cramped crevasse saw the entire population of its island suffocated inside its depths.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

Fascinating town where normal life interfaces with the occult.

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

The largest cave chamber in Britain—big enough to fit a whole cathedral inside.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

Once thought to be the mysterious work of a witchy prophetess, a well with unusual properties turns objects into "stone".

A modern English garden of eccentric beasts, follies, and oddities.

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