Exclusive Sea Glass Festival beach walking tour, 6 to 7 p.m., Cape Henlopen State Park, Point Comfort Station parking lot, Lewes. Shipwrecks & Rescues. See where more than 2,000 ships met their fate as guides share stories of disaster & daring rescues. Includes keepsake & free Sunday Sea Glass Festival admission, cost is $10 per person, park entry fees in effect. For more information go to historiclewes.org.