Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

The rusting remains of the largest assembled WWII fleet on the West Coast.

Dive bar built out of the remains of a whaling ship.

This mysterious series of teeny guerrilla installations sheds a whimsical light on street art in Oakland.

A modern mechanical planetary system, part of a 10,000 year clock.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

A charming desert roadside bakery that produces 10 times more bread daily than it has residents in its town.

A popular tourist cave with a dark past.

Golden Gate Park's historic collection of plants.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

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

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

This corn maze so big you may want to pack a lunch, and possibly a flaregun.

An eccentric home stands out in an otherwise average neighborhood with mosaics, mini topiaries, and kinetic sculpture.

One of the oldest reform schools in the United States, home to wayward boys such as Merle Haggard, now abandoned.

A ruined hotel with an unlucky history and an eerie present.

A giant chess set, minus the psychedelic drug trip.

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

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

Spiral labyrinth hidden in the hills above Oakland, CA.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

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

A storybook European village in Berkeley.