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

Frida Kahlo's childhood home, now a museum of her life and works.

This tiny abode has been covered in the art of the little old lady who made her life and living there.

Iconic rock formations that allow for exploration during high or low tide.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Oakland's beautiful monumental cemetery.

A Biblically-based Natural History Museum.

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

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

A trash dump made beautiful by nature's power.

A crumbling wizard is one of the final reminders of a roadside Middle Earth.

This abandoned motel doesn't welcome guests anymore, but decay and a creepy atmosphere still call it home.

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