A world-class observatory in the California desert.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

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

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

One of the ghostly stops along Route 66.

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

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

Quite simply the largest tree in the world (by volume).

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

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

Explore 10 acres of environmental sculptures.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

A hand-built folk art installation covered with messages of God's love.

America's most famous piece of self-built architecture.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The ghostly remains of an accidental sea.

A trash dump made beautiful by nature's power.

Two massive rock outcroppings on the Oregon coastline.

A massive sea stack famous for its appearance in The Goonies.

Only known mainland rookery of the threatened Stellar sea lion.

100-year-old shipwreck you can walk up to at low tide.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.