This early version of the guillotine was used to execute the man responsible for its construction.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

The last remaining example of the boatmen's perches that once dotted the south bank of the Thames.

Murals of the wild parties once held on the frozen River Thames.

This hand-painted advertisement is a literal sign of encouragement, however unintentional.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

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

This pub boasts a curious history and may have inspired a Dickens character.

Spitalfields' regal market goat is said to be a monument to the area's migrant population but most are pretty sure it's just a goat.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

As fallout from an irrigation project, a formerly cottonwood-lined stream is now a sandy, desolate, post-apocalyptic channel lined with weathered stumps and tumbleweeds.

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

These banned cigarette vending machines now sell little pieces of pocket-sized art.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

An exotic wildlife habitat right off The Strip.

This park contains one of the largest concentrations of cedar glades, a unique and rare ecosystem.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.