2014 Chicago Free Museum Days
Chicago has a variety of museums for entertainment and learning purposes. The below museums (and 1 zoo) offer free days throughout the year.
I recommend calling ahead of time to confirm as free days are subject to change. The free days at the zoo are available nationwide so no you don’t have to be an IL resident to gain access. Click on the link or picture associated with the particular museum you want to go to to be taken to a list of their free days.