The Museum of Illusions is open every day in the following hours:
 

Rome: Monday to Sunday: 10.00 am to 8.00 pm (last entry 7.00 pm).
 

Milano: Monday to Sunday: 10.00 am to 8.00 pm (last entry 7.00 pm).

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Closing days, like Easter and Christmas, and possible variations on the opening and closing times will be indicated on the website’s homepage, in the “highlights” section with advance notice.