Oldest building in California still in use.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Its buzzing collection honors vibrator history.

This massive redwood tree has a hole in the base big enough to drive through.

An optical illusion found amid a logged redwood forest.

Commonly referred to as the most photographed Victorian home in the United States.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Seven ceramic sculptures are scattered around this California college campus.

The only castle in North America to ever house European sovereigns.

A regular looking rock with an unbelievable history.

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

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Along a California highway is a kind of Jurassic Park made of metal.

Where there's quartz, there must be gold. Thus is the story of the mines of Julian, and the titillating times of the Gold Rush.

A world-class observatory in the California desert.