Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Golden Gate Park's historic collection of plants.

The remains of a 12th-century chapter house in Golden Gate Park.

A century and a half of research in the sciences and natural history, still going strong.

A promotional sun clock on the site of San Francisco's great raceway.

The best place in the park to test out your throwing arm.

San Francisco’s condensed garden of incredible plant growth.

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

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

The oldest lawn bowling club in the United States.

This turn of the century masterpiece has a mysterious goaty interloper.

A 140-year-old castle with underground caves hidden in San Francisco.

A decommissioned Naval base now rents itself out for people who want to blow stuff up.

Neoclassical Revival mansion and set of horror cult classic Phantasm.

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

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

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

San Francisco Bay's ghost town.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

The first safe in this California town had to hold all the gold.