A bigger-than-life pun that has become a beacon of altruism.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

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.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

A small medical museum with a recreated doctor's office.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

The mysterious round rocks of Schooner Gulch.

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

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

A museum dedicated to a sea that should have never been.

Abandoned Air Force base that has fallen into disrepair.

An abandoned, unfinished mansion on grounds strewn with lava rocks.

This dark, quiet forest on the outskirts of San Diego is dense with rumor and lore.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Legendary prop shop filled with one man's collection of scientific curiosities.

Visible below the waves are memorials to the city's Gold Rush dead.

A large instrument played by the wind.

Remains of a Greek freighter trapped off of Rocky Point in 1961.

An offbeat angle on the ocean viewed through an antiquated lens.

In this century-old literary safehouse, print is alive and well.

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

This hands-on math museum believes in turning concepts into constructs.

Ten 25-foot-tall, beehive-shaped kilns, abandoned in Death Valley.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.