Historic Landmark Structures Master

Contains polygon features that represent the Parcel or, in some instances, the building footprint of designated historic landmark structures. Historic Structures are established by city ordinance as approved by city council. Ordinance information is contained in the feature attributes. This layer contains polygons that represent the area designated as historic property defined by the legal description in the ordinance. All certian property contained within the defined area, together with all improvements, are designated as a Structure for Preservation.本数据集包含多边形要素，用于表示指定历史地标建筑的地块（Parcel），部分场景下亦可代表该建筑的建筑基底范围（building footprint）。指定历史建筑由经市议会批准的城市条例所确立，相关条例信息存储于要素属性中。本图层包含的多边形要素，代表由条例中的法律描述所划定的历史保护地块范围。该划定范围内的所有不动产及其附属改良设施，均被认定为需予以保护的历史建筑（Structure for Preservation）。