These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

Once a train station along the Great Eastern Railway this vibrant coffee shop and bar is where members of London’s creative class mingle.

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

One part local history, 99 parts gruesome haunted house.

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

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

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

The first and only carousel with a lineup entirely of insects.

A mysterious statue of a leather jacket-clad rebel leans coolly on an odd yellow clock.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A formerly abandoned mental institute, now back in business.

An eccentric playboy's astounding natural history collection.

The former estate of the Guggenheims, part of the opulent Gold Coast that inspired the Great Gatsby.

The abandoned grounds and derelict greenhouses of this once-magnificent Edwardian estate are now a nature preserve open for exploration.

The site of a tragic massacre that spawned a multimedia franchise.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

Whale bones, scrimshaw, and sperm oil make up just a part of this comprehensive collection of whaling history.

Spies, love letters, and ghost stories have all left their mark on this home-cum-museum.

An abandoned Gold Coast-era mansion once intended for the exiled ruler of Albania, who never arrived.