Make sweet music as you walk through this interactive sonic sculpture.

Explore more than 130,000 new and used books in the "world's largest outdoor bookstore."

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.

At 130 years old and 126 feet tall, it is the largest known example of the rare Torrey pine tree.

The beautiful behemoth is one of the largest trees of its kind in the United States.

This little gem of Spanish Colonial architecture has been abandoned since the 1950s.

California's oldest wind harp represents a historic piece of America's Danish history.

A Mysterious Masonic tomb in San Luis Obispo.

When California condors were hovering on the brink of extinction, this recovery program was charged with helping the birds thrive again.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

This eagle-topped spire remembers the military commander who snatched up California for the United States.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

A tree grown from astronaut seeds which were exposed to cosmic rays.

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

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

The most beautiful Taco Bell in the world even has surfboard parking.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

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

A huge musical instrument played by the ocean.

Once the fastest ship from San Francisco to Tahiti, the Galilee now lays in pieces in three different cities.

Visible below the waves are memorials to the city's Gold Rush dead.