The Lemont Area Historical Society is located in the Old Stone Church, a national landmark listed on the National Register of Historic Places. It also contains a rich collection of historical artifacts from Lemont and the surrounding area. The purpose of the Lemont Area Historical Society is to preserve the heritage and folklore of Lemont, and to operate the museum as a repository for memorabilia and artifacts. Founded in 1970 to save the Old Stone Church, the Historical Society is a not-for-profit organization which exists throught the support of its members.