When in LA you must visit LACMA! LACMA is a Museum of History, Science and Art, in Los Angeles. I was looking forward to the rain room but unfortunately advance reservations are required. If you are visiting in a few months, I recommend you to reserve 2-3 months in anticipation. Here is the link to reserve your admission.
The 202 cast iron antique street lamps will always be one of my favorite art spot in LA.