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

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

An essential stop before plundering, BYO Cutlass.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

This Big Sur waterfall drops 80 feet directly into the Pacific Ocean, and inspired the hillside house up top.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

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

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

Canyon walls shrouded in ferns.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A meditative space out of a fantasy story.

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

Carved by a waterfall in a hard-to-reach rock formation, this heart-shaped rock has inspired romantics for decades.

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

San Francisco's newly reopened hands-on science museum.

Tiki luxury on Nob Hill.

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

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

A hotel and restaurant serving as the mecca of kitsch.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

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

A library of rare occult books in Los Angeles.