World's largest collection devoted to one fruit.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

An off-grid art installation that encourages its visitors to imagine a world without waste.

This abandoned Navy base was transformed into an off-grid alternative living community for thousands of people.

A hand-built folk art installation covered with messages of God's love.

Erroneously called the world's tallest flagpole, this landmark is devoted to "good neighborliness."

At this deceptively beautiful beach, nothing is what it seems.

Huge otherworldly domed rocks on the shore of a deadly lake.

A monument to a one-legged kidnapper, horse thief, and charlatan asks visitors to throw rocks in a pile.

Along a California highway is a kind of Jurassic Park made of metal.

An inconspicuous footbridge beloved by San Diego locals.

An ode to the friendship between four Pacific Rim countries.

The sun acts as a key that only fits this giant keyhole twice a year.

A "haunted" landmark on the coast of Southern California.

Remants of foundations, streets, and streetcar tracks inhabit the cliffs where a landslide occurred in 1929.