Discover the art in nature at the AgathaO tent at the South Shore Arts festival on Cohasset Town Common this Father’s Day weekend. New work, cards, matted and framed prints, books, and more.  Friday June 16, 1-7 pm; Saturday June 18, 10 am -7 pm; and Sunday June 18, 12 pm – 5 pm. The festival, which is sponsored by the South Shore Art Center, is free and open to all.