Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

The Giant Lemon of Lemon Grove.

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

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

This Pringle-shaped ledge makes for the perfect photo op.

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

North America's largest accredited model railroad museum.

One of the largest trees of its kind in California.

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

San Diego's most historic and haunted home.

Stripes of flowers bloom each spring in a 50 acre rainbow of color.

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

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

These unusual houses look like giant boats that washed ashore on a residential street.

This unique sanctuary invites you to interact with the beautiful birds.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

Finally the worlds of UFO enthusiasts and beef jerky lovers have come together in this roadside shop.

This mostly abandoned shopping outlet is now adorned with beautiful graffiti and murals.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

This giant temperature attraction created some giant electric bills.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

The only ski tunnel in North America provides easy access to amazing snow and beautiful views.