The National Trust for Historic Preservation is a nonprofit membership organization that specializes in the protection and enhancement of historical sites. It is involved in the acquisition and administration of art centers and museum properties. The organization manages the Preservation Services Fund, which was created in 1969 to provide financial assistance to local preservation projects. It also administers programs that focus on rural preservation and heritage tourism. The National Trust for Historic Preservation employs a work force of more than 270,000 people and maintains over 25 historic sites. It operates nearly five regional offices in the United States. The organization additionally offers online donation options.