The curios of pharmacist and collector Henry Wellcome.

One part local history, 99 parts gruesome haunted house.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

A monument to the center of the North American continent may be off by a few miles.

The commemorative stone column conceals a secret laboratory.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

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

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

The Great Fire of London and the regulation of one-way streets both started in this alley.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

A well-studied colony of endangered bats roosts in this abandoned Victorian Gothic mansion.

This medieval manor house was equipped with secret compartments for hiding priests.

Britain's answer to the NSA is based out of this deliciously-named circular headquarters.

A petite castle folly in the English countryside.

The last occupied troglodyte dwellings in England weren't abandoned until the 1960s.

A slightly surreal menagerie of structures that were lovingly spared from demolition and reconstructed in a field.

This 15th century pub is one of only two pubs in England situated on consecrated ground.