These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A downtown park built on top of unclaimed graves.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

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

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

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.

It is locally loved and ridiculed for literally looking like poop.