An electrifying collection of gadgets and literature from the 16th through 20th centuries.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

An enchanting tunnel of cypress trees leads to an old morse code station still used today.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

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

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

A mesmerizing disco ball-like sculpture along the Sacramento River Walk.

Art Deco stylings conceal the true nature of this bridge.

I Street Bridge is the heaviest swinging center bridge in the United States.

A replica of the first public theater built in California.

The California capital city once stood 10 feet lower than it does today.

This 19th century train workshop is a treasure trove of railroad history.

Where the first "expert riders, willing to risk death daily" for the Pony Express were recruited.

Magical-looking cottages that inspired one of the most famous animated films ever.

This house turned museum chronicles the life and work of Richard Neutra.

A grave dedicated to the pioneers who settled California.

Built to hold Gold Rush wealth, this building has withstood the test of time.

A rich history stashed behind an unassuming door in the heart of Gold Country.

An abandoned lot littered with concrete debris was once the home of the world's first female railroad president.

Hidden in a hotel parking lot is a strange historical plaque erected by an obscure fraternal society.

Dentist's hated concrete colossi are now beloved icons of the community.

A working miniature city designed to teach kids about safety and presumably city planning.