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

California's own majestic geyser is powered by a subterranean volcano.

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

Thousands of crosses and markers for soldiers who lost their lives in Iraq and Afghanistan blanket a California hillside.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

The oldest house in the capital of Silicon Valley.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

Where the rich wintered in Pasadena.

A bigger-than-life pun that has become a beacon of altruism.

After serving in World War II and picking up Apollo astronauts, this aircraft carrier has been turned into a museum overlooking the San Francisco Bay.

A former hardware store near Yerba Buena is the official home of California's history.

The original place where water met land in the City by the Bay is outlined in brass.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

In 2013, historians discovered a hidden room devoted to the art of making royals' hot chocolate.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

Images chiseled into the basalt here date back an estimated 300 years.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The famous aviator's final resting place is a study in natural beauty.

This effigy of Peter the Great is greatly disproportionate.

Sporting Brutalist architecture, this school is hidden amid a quiet suburban neighborhood.

The first KFC is on the National Register of Historic Places.

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