The Castine Historical Society is a nonprofit organization dedicated to preserving and sharing the history of Castine, Maine. Founded in 1965, it operates the Castine Historical Society Museum, which features exhibits on local history, maritime heritage, and the area's role in the American Revolution. The society also manages the Abigail Adams Smith Museum, showcasing artifacts and documents related to the town's past. Through educational programs, events, and research initiatives, the Castine Historical Society aims to engage the community and promote an understanding of the region's rich history.