I do quite a few bike rides in the San Fernando Valley at least once a week. Sometimes I find a few cool places with views. On the north side of Reseda Blvd. there is a hiking area around Porter Ranch and there are quite a few of them.
I also have another photo from the opposite side of the valley in a post here.
This is a photo of just when the COVID lockdowns started in 2020 and I took Jackie and my best friend Kesha on a walk around the top of the hill. The couples here were just being outside and looking at the entire valley.