Two-year-old Lorenzo Bradt of Roxbury races happily through bubbles created by The Bubble Guy at the August 21 ParkARTS Boston Children’s Festival at Franklin Park hosted by Mayor Martin J. Walsh and the Boston Parks and Recreation Department. Children and families from throughout Boston participated in a variety of free activities from exhibitors including L.L.Bean, Cambridge Science on the Street, Rosalita’s Puppets, ParkARTS, Mass Hort, Zoo New England, and more. ParkARTS is made possible in part through the generosity of Holly and David Bruce.