~Photos by Bobbie Toner

What the Fluff? A Tribute to Union Square Invention returned for a 13th year on Saturday, September 22.

This zany and fun-filled festival honors the invention of Marshmallow Fluff by Archibald Query in Somerville in 1917 and celebrates the spirit of innovation that continues to thrive in Union Square today.

This year, Fluff the 13th presented by Allstate, played on imagery lucky 13, conjuring illusion, fantasy, black cats, turning luck, and the magical. Festival-goers were invited to step into an alternate dimension of the imagination with a wide variety of themed happenings.