A popular tourist cave with a dark past.

An old California photo stand has been turned into a shrine to the cozy art of crochet.

A cozy bookstore is tucked within an old gold mine shaft beneath the cafe and ice cream shop.

A house built from trash known as the poor man's Hearst Castle.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

Hundreds of trees made from glass bottles make up this forest on Route 66.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

An unreal vintage shop that wears its dadaist influence on its zombie fish.

Julia Morgan's Moorish-Gothic labyrinth of fountains, trees, natural light and Oakland's notable dead.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

One of the last free public hot springs is decorated with hippie art.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

Explore 10 acres of environmental sculptures.

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

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

Graffiti, cars, and religion combine to create this jungle of scrap in the Nevada desert.