GRIFFITH PARK ,

The trails of this park wind through the wooded hillsides toward the Hollywood sign and the Observatory. Scrambling through brush and the rocks, you could imagine yourself in the Old West, or deep in the jungle, or, once you reach the Observatory terrace, in “Rebel Without a Cause.” All of which were perfectly apt. The varied natural and human topography of greater Los Angeles — desert, forest, suburb, seaside, slum — has made it almost infinitely adaptable. One of the reasons so many movies are made here is that it can so easily pass for just about anywhere.

(Description copied from HERE)