In its 8th year, Riverfest is the culmination of a summer of activity at Assembly Row. In partnership with The City of Somerville and DCR, celebrate all that is great about the neighborhood! Join us for a day full of live local music, dozens of local artists, free children’s activities, a sidewalk sale, and of course the annual fireworks show over the Mystic River at sundown. September 12, 12 p.m. -8:00 p.m. at Assembly Row and Sylvester Baxter Riverfront Park.