A Mysterious Masonic tomb in San Luis Obispo.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

Where the leftovers of love affairs can live on forever.

An alley covered with 20 years of bubble gum.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Home to items never before seen by the public.

There are lots of hands and feet stamped in the cement in front of Grauman’s Chinese Theater, but Mel left behind something extra.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

Shakespeare has been brought to life in this open air theater for the better part of a century.

A tourist attraction founded around a slumping cabin.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Quite simply the largest tree in the world (by volume).

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

From the Difference Engine to the Cray-1, all under one roof.

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

A remote crossroads honoring a fallen talent.

The largest permanent Monopoly board makes one of the longest games even bigger.