Southern California is known for wantonly erasing its past, so it’s a pleasant surprise to find that multiple World War II-era air raid sirens still stand. Here are two in downtown L.A., one at Broadway and Temple near the old Hall of Justice, left, the other on Olive and Second by the Music Center parking structure, below, the tip of Disney Hall poking up behind.
Close to home, Claremont has one on Sixth Street east of Mills on the Claremont McKenna campus, next to the bottom. I’m relieved to know my city of residence is prepared in case of attack, perhaps by Montclair.
UPDATE: As commenters below brought to my attention, Claremont has a second air raid siren, on Oxford Avenue between 10th and 11th streets. I’ve added a photo of it at the bottom.
This website has photos of nine more in the L.A. area, including in Eagle Rock, MacArthur Park and near LACMA. This page has photos of 38 L.A.-area sirens, albeit without the locations identified. More than anyone would ever want to know about air raid sirens can be found on this Wikipedia page.