Macabre astrological automaton clock dating to the late 1400s.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

The world's second largest single-dish radio telescope, once used to contact E.T.

The world's brightest bioluminescent bay.

An underground city of salt.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

This strangely amalgamated museum explores the history of the Timex clock company as well as archaeology.

This automated sculpture of two men peeing will spell out text messages with their micturition.