Oddly shaped rock formation, misassociated with a nearby utopian community.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A vast city of the dead, where the deceased outnumber the living by more than a million.

Sandstone rock formations that look like they belong on the cover of a progressive rock album.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

A rich history stashed behind an unassuming door in the heart of Gold Country.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

Natural sonic phenomenon comes with a grisly legend of murder and blood.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

This granite monument at the site of an ill-conceived tourist attraction is built from the same stone as the Mormon Temple.

Visitors to this library are in for a real-world education in modernist architecture.

The rusting remains of the largest assembled WWII fleet on the West Coast.

The fossilized remains of ancient California redwoods.

I Street Bridge is the heaviest swinging center bridge in the United States.

Come for the speed, leave in love with the desert.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

The largest island on the great salt lake is home to curious creatures and strange stories.

A Roman-inspired temple once controlled half of San Francisco's waters.

This giant temperature attraction created some giant electric bills.

Largest man-made excavation on earth!