If you like B-movies, Bronson Canyon was a favourite filming spot for alien landscapes in the 1950s and 1960s. It was a major location for the movies: Robot Monster They Saved Hitler’s Brain The Phantom Empire Eegah! The Brain from Planet Arous *AND* The Lost Skeleton of Cadavra #SciFiLA

Also the location of the Batcave in the 1960s TV series.

Also Huntington Library for ST:TNG ST: DS9 (Betazed, Edo, and the Celestial Temple) and Serenity (River's class next to the pond).