We drove up to Griffith Park Observatory. It was very crowded with visitors and we had to park down the hill and walk up a steep road. The views were terrific, though somewhat foggy
so we couldn't see downtown L.A. or the ocean very clearly. 
This observatory has been seen in lots of movies. It's a beautiful building and the inside is full of wonderful displays. There's a planetarium, which we didn't go into, a cafe and a gift shop, but the views are the best part. Check out the link above and you'll see the famous facade.
