The museum is medium sized. You can get through the museum in 2-2.5 hours if you go at a moderate pace. The Phoenix Art Museum is free every Wednesday after 3pm and every first Friday of the month. That being said, I normally don't like complaining about anything that is free but I felt like I was constantly being scolded while I was here. I was told when I entered, that cameras were allowed. However, every time I went to take a picture of something, a security guard came up and told me I wasn't allowed. Only some art has signs next to them that say no photos. I made sure not to take photos of those ones specifically but I still got yelled at for taking photos of those without signs anyway. I was also told several times that I was getting too close to some sculptures, even though there was no wire around it.
The museum houses a variety of work but I was not too impressed by any of it. I only saw 3 pieces of art with recognizable artist names. I took art history for 4 years in college, I know many names too, not just the big ones like Picasso and Monet. I'm not saying art is only good if the artist is well known, but I would expect more familiar names. Anyway, it was free and that made me happy in the end. It would have been more enjoyable if I didn't bring along my camera that was tempting me to take photos. Maybe next time, I'll leave it at home.
So beware of the photo nazis at the museum!