This South London cemetery holds the remains of more than 15,000 people.

The curios of pharmacist and collector Henry Wellcome.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A hands-off space for graffiti artists to hone and display their skills.

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

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

A site of pagan worship which still attracts people looking for fairies.

This tiny little cave was said to have been a refuge for a saint with a glowing arm.

A curious collection of mechanical moving figures.

A book bound in the skin of an infamous criminal, along with countless other specimens.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

This series of Scottish caves has no clear purpose other than baffling historians.

The one-time stronghold of the noble Douglas family, now home to ghost sightings and nesting birds.

Birdhouses, peacocks, animal sculptures, and a graveyard are all found along this eclectic nature trail.

On the outskirts of a desert trading village high on the Andean plain, steel giants have been destroyed by salt winds.

A 30-acre garden inspired by the principles of modern physics.

Ingenious bakery opens up the first Cupcake ATM at their flagship location in Beverly Hills.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Towering basalt columns, a creation of fire and ice.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

An eclectic trailer park retreat in the middle of the California desert.