Mid-Atlantic Sea Glass & Coastal Arts Festival, 9 a.m. to 4 p.m., Historic Lewes main campus, 110 Shipcarpenter St., Lewes. Over 75 sea glass and coastal artists, sea glass history & identification experts, education, lectures, live music, food, cost for admission is $10, children under 12 free, rain or shine. For more information go to historiclewes.org.