Eight huge lanterns lining a city street can change color on command.

A lonely monument to the original Silicon Valley tech campus.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.

Today's aerospace industry can be traced back to one man and his gliders.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

The largest man-made crater in the U.S. marks the spot where we once tested mining with nukes.

A picture-perfect town, perfect for blowing up.

The wild west is still alive and well at this authentic mining town watering hole.

The first lookout in Yosemite.

Once disputed as the largest sundial in the world.

The first high-tech company in the valley that actually worked with silicon devices.

A giant can of fruit cocktail is all that remains of what was once the world's largest cannery.

This airfield played a key role in both World War II and the Cold War.

This private residence was the template for one of the most beloved television homes of all time.

This 19th-century church is now a popular roller rink.

This shop and studio is dedicated to the art of the book, from letterpress to bookbinding.

A storybook European village in Berkeley.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.