Bringing back the art of handmade custom coffins.

Its dark depths conceal millions of rare, delicate crystal formations.

Golden Gate Park's historic collection of plants.

A hidden subterranean installation offers a view of the sky.

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

With the touch of a button, you can read a randomly selected short story.

The unbelievably opulent home built for an infamous newspaperman.

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

These millipedes glow not out of attraction, but as a not-too-subtle warning.

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

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

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

An inconspicuous footbridge beloved by San Diego locals.

A storybook European village in Berkeley.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

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

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

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

Canyon walls shrouded in ferns.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

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

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