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

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

Pop culture has helped to keep this iconic British building from being destroyed.

This pub was 238 years old when it decided to revamp its image: It started serving Thai food.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

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

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Repository for more than 22 million pickled specimens.

One of the world's largest collections of pathological specimens.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

An unusual round church in London with a Templar past.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

Banksy gives themself artistic license with this piece of London street art.

Eighty million natural history specimens call this gargantuan museum home.

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

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

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

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

New Zealand's epic shrine to all things puzzling.

This preserved village shows the modest lifestyles of the area's 19th-century Chinese gold miners.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A bronze statue to commemorate an Auckland library's beloved feline resident.