Discover Thyself! …at Scarborough Renaissance Festival. Like this Galileo Renaissance Scientist Costume? We have a store completely filled to the brim with Ren Fest Costume Ideas for you to explore. You may discover another you. Come try on our Great Selection of Renaissance Attire. You will get respect when you stroll around the Renaissance Festival in your Ren Fest costume. FYI, you might be heckled if you show up without a costume at all. Scarborough Renaissance Festival 2018 dates are 04/07-05/28, 2018.