An optical illusion found amid a logged redwood forest.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

Folk art crafted from discarded vegetable crates.

Commonly referred to as the most photographed Victorian home in the United States.

The largest drain hole in the world.

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

The fossilized remains of ancient California redwoods.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Frank Lloyd Wright died a year before construction on his largest public project even began.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

Concrete strongholds stand guard over the Golden Gate.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

A four paneled, brightly multicolored mosaic adorns the side of this popular grocery store.

America's oldest Italian restaurant is a San Francisco institution.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

Wander down a side street dedicated to one of the members of the Beat Generation.

Tiki luxury on Nob Hill.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

Only hotel where you can legally launder money.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

A 56-foot tall statue of the god of fire looks out over Birmingham, Alabama.