Robert Irwin spent 4 years designing what he called "a sculpture in the form of a garden, which aims to be art". More than 500 varieties of plant material are used, and the selection is always changing, as testaments of what Irwin itself said: "art doesn't reside in the object but in the moment."
It's a cemetery, but the view from up here is stunning and you can see one of the most large scale epic paintings ever made by a human: The Crucifixion painting, by Polish artist Jan Styka. It's a must see.
I had a studio in this neighborhood for 3 years. Just take your camera and spend a couple hours walking around admiring the colors and people and odd shops.