A volcanic landmark located on an Ice age lake bed.

A volcanic fissure over two miles long and up to 70 feet deep.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

A collection of colorful dinosaurs hidden in an actual rainforest.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Canyon walls shrouded in ferns.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The mysterious round rocks of Schooner Gulch.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

The California capital city once stood 10 feet lower than it does today.

Life-sized sculpture of a blue whale made of hand-recycled plastic trash.