A historic London pub with prison cells in the cellar and a "spy room" on the second floor.

London's smallest police station is barely the size of a phone booth.

An incarceration museum on the spot of possibly the oldest prison in England.

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

The site of London’s first coffee house has been serving refreshments of one kind or another for 360 years.

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

The curios of pharmacist and collector Henry Wellcome.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

A student driver's nightmare.

One part local history, 99 parts gruesome haunted house.

An unusual round church in London with a Templar past.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

Famously misunderstood wonder of the ancient world

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Hidden beneath the streets of London is a secret subway that only carried mail.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This historic covered bridge contains a series of macabre paintings that communicate one thing: everyone dies.

The place to be if you love vintage Swedish cars.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.