a single, freestanding structure with a roof and walls that can but does not have to be subdivided into two or more building divisions.
Alternate Names: single built works; built works; structures
Getty ID: 300004792; 300004789; 300265418; 300004794
an opening, which contains or could contain a door, that provides access into or out of building spaces
Alternate Names: door opening, threshold
Getty ID: 300002767
groups related by blood, marriage, and/or adoption
