As part of the 2018 Celebrate our Waters weekend, the Addison Art Gallery is sponsoring plein air painting, a fresh paint exhibition, book signing, reception and demonstration. Artists from Cape Cod and beyond will be painting at waterside sites around Orleans including Rock Harbor, Little Pleasant Bay at Paw Wah Landing, Town Cove and Pleasant Bay Community Boating. Their wet paintings will be brought to the Addison Art Gallery for an exhibition and reception from 4 to 6.