The commemorative stone column conceals a secret laboratory.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

Eighty million natural history specimens call this gargantuan museum home.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

One of England's most famous churches hides a pair of little known architectural treasures.

This skewed English house has looked like it's going to fall over for centuries.

A beautiful Kentish country intersection hosts a tasty little photo spot.

A vast archive of cultural artifacts collected from numerous expeditions across Africa and Asia.

An English explorer's vast natural history collection has the first realistic dioramas of animals staged in their natural habitats.

Grotto replete with mystical designs laid out in glued shell mosaics.