A psychedelic labyrinth on the San Francisco bay.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A huge musical instrument played by the ocean.

Pizza joint known for labor-inducing salad dressing.

In the days before HD projectors and IMAX, some of the most powerful projectors belonged to planetariums.

This Pringle-shaped ledge makes for the perfect photo op.

A popular winter vacation destination for migrating monarch butterflies.

Offering commanding views of the California coastline, this restaurant was a hub for the artists and bohemians of Big Sur.

A small sculpture garden that provides a microcosmic representation of California.

This large collection of tiny things revels in the art of fine machinery well made.

First LEED-certified gas station in the United States.

Every year, over 25,000 monarchs overwinter in Pacific Grove.

Bits and pieces from the ill-fated Donner Party's winter cabins.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

An inconspicuous footbridge beloved by San Diego locals.

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

A couple turned their front yard into an artistic masterpiece.

A regular looking rock with an unbelievable history.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

Mexican food and folk art.

A large instrument played by the wind.