I walked, so it was difficult to find; it would have been a lot easier had I been driving. The planetarium itself consists of a small "gift shop" at the entrance, an exhibit room, and a huge sun where they do the shows.
I attended two shows (3 actually as two are shown back to back as one). The first was educational, and quite interesting, while the 2nd was a dizzying, motion sickness inducing piece for Pink Floyd's album "Darkside of the Moon." I would highly recommend seeing this if you are into Pink Floyd and aren't prone to seizures.