Related by context. Frequent words. (Click for all words.) 57 vestibules 55 Concrete barriers 55 sally port 52 spiral staircases 51 sawhorses 51 fenced 50 entrances 50 entranceways 50 entranceway 49 watchtowers 49 barbed wire fences 49 chainlink fence 49 perimeter fencing 49 razor wire fences 48 barbed wire 48 wrought iron gate 48 ventilation ducts 48 staircases 48 gangways 48 doorways 48 metal grates 48 gatehouse 48 earthen berms 47 stairways 47 railings 47 entryway 47 walls 47 Picnic tables 47 parapets 47 razor wire 47 fences 47 gates 46 Plexiglas 46 barbed wires 46 wrought iron fence 46 bollards 46 cellblocks 46 razor wire fence 46 entrance 46 shower stalls 46 concrete barriers 46 walkways 46 circular driveway 46 stairwells 46 cages 46 bridge girders 46 landscaped courtyard 45 sound proofed 45 wire mesh 45 entryways 45 enclosed 45 concertina wire 45 passageways 45 loading docks 44 cinderblocks 44 walkway 44 soundproofed 44 baggage carousels 44 masonry walls 44 stanchions 44 guardhouse 44 portable restrooms 44 Portable toilets 44 bridge abutments 44 cubby holes 44 makeshift barricades 44 wooden walkway 44 mezzanines 44 elevator shafts 44 Walkways 44 cinder block 44 cinder block walls 44 boxlike 44 plinths 44 enclosed patio 44 Barbed wire 43 stockade 43 barbed wire fence 43 plexiglass 43 twin towers footprints 43 narrow passageways 43 concrete pilings 43 caissons 43 fence 43 fencing 43 electrified fence 43 pumphouse 43 concrete footings 43 varying heights 43 barricades 43 Plexiglass 43 spiral staircase 43 hitching posts 43 handrails 43 tall pine trees 42 aviaries 42 sloped roof 42 rusted metal 42 octagon shaped 42 passageway 42 subway entrances