One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Commonly acknowledged as the only public monument to the Devil himself.

Where NASA's satellites and rovers phone home.

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

An abandoned cyanide mill is now a haunting magnet for graffiti and illegal parties.

Home to the "Circus" trees created by Axel Erlandson.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

This giant shopping mall still holds signs of its automotive past.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A giant chess set, minus the psychedelic drug trip.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

The final resting place of a space program monolith.

The legendary building that needed ghostly approval before being built.

The private clubhouse for the members of the Academy of Magical Arts.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

Hiding amid the largest camellia collection in the country lies a charming children's maze, donated by a secret admirer.