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

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

A museum befitting the city responsible for supplying the majority of the world's LSD.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

A large instrument played by the wind.

This unique formation appears as though an asteroid landed on the forest.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

An eatery within a Bay Area Buddhist temple pulls off all your favorite Vietnamese classics without the meat.

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

For roadside fast food, pull over at the giant orange.

The largest drain hole in the world.

At this 1940s-era neighborhood favorite, you can still drink a cherry phosphate.

This hidden amusement park is a magical escape for kids and kids-at-heart.

Giant jewel-toned statues fill the grounds of this Cambodian Buddhist temple in California.

A dwindling menagerie of anthropomorphic oil derrick animals still dot the barren California landscape.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

Tucked away on an empty wooded lot in suburban Oklahoma City lie the remnants of an abandoned circus camp.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.