Hollywood's oldest hotel is the site of the first Academy Awards, the birthplace of Marilyn Monroe's career, and the home of Montgomery Clift's ghost.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

This stockpile of junked electronic and mechanical gadgets is a favorite among Hollywood prop masters.

California's own majestic geyser is powered by a subterranean volcano.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.

The hidden jewel of Disneyland: a members only playground for the Disney elite.

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

The miraculous hydrant that saved the Mission District in 1906.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

A Mysterious Masonic tomb in San Luis Obispo.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

An L.A. traffic island where the faces of locals have been carved into massive granite eggs.

Megachurch turned Catholic church comprised of 10,000 glass panes.

This impressive tunnel was dug entirely by hand over the course of 36 years.

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

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

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

One of the world's longest murals depicts the history of diversity in Los Angeles.

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

“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

"Only the devil could play golf here."

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.