Life in Chicago?

Going there in a few weeks and need some stuff to do. What are some museums/art galleries I should attend? Perferably ones with good photography exibits. What are some unique places to photograph? Don’t really want your typical postcard images. Also need some good places to eat. I like all types of foods but definitely want to get some Chicago style pizza and Greek. If their is anything else I should experience I am open for suggestions.