structure
public under artifact 2187
- building 47
- cage 1
- divider 1
- earth-structure 16
- enclosure 3
- fence 2
- grocery-store 1
- housing 13
- office 1
- ornamental-fountain 1
- rack 5
- road 6
- shop 4
- signboard 3
- storey 2
- works 2
- academy
- altar
- aqueduct
- balcony
- bridge
- cabaret
- castle
- coil
- court
- cross
- dam
- gate
- grate
- grill
- lattice
- masonry
- memorial
- occlusion
- outdoor-deck
- patio
- picture-frame
- playpen
- pound
- power-station
- prison
- sash
- spa
- stadium
- tent
- tunnel
- vehicle-body
- walker
- wall
- window-frame
- window-unit