The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

A huge musical instrument played by the ocean.

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

A monument to the love people have for their pets.

Across Ring Mountain is a vast collection of Native American petroglyphs unique to the region.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Centuries of biking history are nestled in the shadow of the birthplace of contemporary mountain biking.

One man's love of natural beauty led to the creation of this hidden granite monument.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

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

Home to an apple tree that can produce 25 different varieties of fruit.

The haunting ruins of Jack London's dream house.

The fossilized remains of ancient California redwoods.

A sculpture dedicated to Napa Valley's oldest mineral water company.

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

California's own majestic geyser is powered by a subterranean volcano.

A massive volcanic plug is now a protected area that hosts a number of bird species.

The unbelievably opulent home built for an infamous newspaperman.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

This municipal playground was co-created by the father of one of the most playful characters ever.