Hey, you want to set your movie or TV show in a high school? Head to Van Nuys.
Does that look familiar? It should, if you've seen Fast Times at Ridgemont High. Or Grease. Or The Wonder Years. Or Christine. Or half of the episodes of other TV shows that happen to take place in a school. That's Van Nuys High School, and we're guessing it's pretty damned hard to get an education there when every other day there's a film crew shooting a damned coming of age dramedy.
"Hey, is that the new principal or Judge Reinhold?"
But probably the granddaddy of all reused California locations is the venerable Bronson Canyon. Not, surprisingly, named after epic mustache/firearm wielder Charles Bronson, Bronson Canyon has been used as a cheap ass "rock with a cave entrance" location since 1919. It was the entrance to the Bat Cave in the old Batman TV show:
Legend has it that Burt Ward and Adam West haunt Bronson Canyon to this day.