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

Catacombs turned marketplace.

The world's longest continuously running show has played at this small West End theater since 1974.

This ancient Egyptian obelisk still bears the wounds of World War I.

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

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

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

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

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

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

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

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

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

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

The Grand Canyon of Texas.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

This Czar-funded, onion-domed, lavishly muraled Orthodox Church played a starring role in "The Deer Hunter."

This highest peak in New Mexico is named after an explorer who had a habit of lending his moniker to peaks.

A futuristic temple of light uses prisms and rainbows to create an atmosphere of peace.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

This marker identifies the location where three states converge.

Eat like pre-Columbian Native Americans in this New Mexico restaurant within the Indian Pueblo Cultural Center.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

The site of the gruesome massacre—and maybe cannibalism—of five men, a tragedy that made Alferd Packer infamous.