L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The Giant Lemon of Lemon Grove.

The ghostly remains of an accidental sea.

Tucked away behind an unassuming set of shops is a must-see series of stunning murals.

World's largest collection devoted to one fruit.

A magnificent, reportedly haunted mansion built for a composer by Spiritualists.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The oldest standing structure in downtown San Diego.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The classic Atari game's iconic aliens have invaded downtown San Diego.

One of the few remaining carousels built by master amusement park carver Charles I.D. Looff.

A sculpture of the famous photograph stands on San Diego's "Greatest Generation Walk."

The rocks in this arid basin leave trails of movement behind them.

The tiniest tiki room in San Diego.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

While you're unlikely to find riches here these days, this remote mine is a time capsule of the Gold Rush era.

One man's quest for the ultimate road trip vehicle.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.

Swarms of butterflies cannot compare to the awe inspired by the publicly-funded nakedness once displayed in this sunken garden.

North America's largest accredited model railroad museum.

The freeway that never was.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Lemon Grove, California is known for its giant lemon...and mummified bodies.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.