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.

Collective dedicated to restoring steam engines.

Worker-owned cooperative and resource for those looking to lighten their ecological footprint.

This bakery sits on the site of the Black Panther Party's first headquarters.

Though many were skeptical at first, these animal-specific routes across the Trans-Canada Highway have been a major conservation success.

The natural hot spring that was integral to the creation of Canada's first national park.

A land of debatable treasure.

Considered by many to be one of the most dangerous highways in Alaska.

In 2018, Pohoiki Road was severed by lava flowing from the eruption of Kilauea.