Keystone (SD) properties considered special purpose are typically churches, schools, theaters, agriculture facilities, amusement parks, and cemeteries, for example. Since these types of Keystone (SD) properties have a unique floor plan and property layout, finding a another purpose would mean reconstruction, which in some cases is not possible or most Keystone (SD) property owners wish to keep the property intact. This type of property is best leased for its original purpose.