Cool! I was only wondering about you the other day, as we visited San Francisco!
Excellent to have taken this with the iphone, I don't normally think of taking photo's with my iphone unless of course I've left my camera behind! Anyway was sure this would ribbon, but I guess 6th is pretty good in a FS.
edited to add; and now I actually see this is the site of Bixby bridge which we saw and stopped and took photo's of, mines pretty boring compared to yours, it was very overcast with flat light.
This is very nice, I like that you captured the lady in the yellow flowers she really adds to the overall photograph in my opinion. Your composition is excellent.