This giant slab of driftwood marks the beginning of the Winnemucca to the Sea Highway.

Ruins of the original wooden flume that carried water to Virginia City are still visible high on the Virginia Range.

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

A volcanic cone that formed over 600 years ago.

California's largest steel arch bridge.

A ruined hotel with an unlucky history and an eerie present.

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

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

One of the oldest adobe structures in Northern California.

This park celebrates a sister city relationship that survived the Cold War.

This settlement on the original Transcontinental Railroad began by harvesting timber, but transitioned to a forgotten 19th-century industry: harvesting ice.

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

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

Shoot for par over the bodies of the dead on this cemetery-cum-golf course.

Guns that have been defending San Francisco since 1904.

Abandoned landscape once home to "the world's largest winery."

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

Neoclassical Revival mansion and set of horror cult classic Phantasm.

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

A tribute to one man's legacy of improving the accordion's reputation.

The tallest bridge in California was constructed for a project that was eventually cancelled.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.

This small oasis of flora and art was created in remembrance of a local auto business owner.

The Flatiron Building's storied West Coast cousin is a lot more into religion.