The haunting ruins of Jack London's dream house.

A living time capsule of the 1960s Richardson Bay water-front.

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.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

A spiritual vortex among the red rocks in Sedona.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Blink and you may miss this rustic pioneer cemetery.

'Cause the fence start shaking, the earth was quaking.

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

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

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

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

A winding path built in secret on the edge of the continent.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Olfactory delights in San Francisco's Botanical Gardens.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.