angles appearance decorative display energy exterior external foliage footpath glass lamp lamp-post lamppost light lighting lights outdoor outdoors protected protection protective round rounded safety security shapes shine street street-light styles suburban suburbs trees urban wall banknote british cash color colored colors colour coloured colours currency dollar finance historic history king King-George-V low-value minimum monetary money notes numismatics pre-World-War-2 pre-WWII Singapore Straits-Settlements textures value values clouds dark darkening sky triangle triangular building building-construction building-site building-work buildings construction construction-site construction-work crane danger height heights high lifts metal-work pipes railing rails scaffolding steel-scaffolding tall work work-safe workmen abstract architectural architecture circular curved design edges elements feature geometric geometrical gray grey interconnected lines patterns perspectives points radiating roof roofing secure shade shadows style sunlight surfaces advice alert appropriate behavior appropriate behaviour area assemble assembling Assembly communicating communication direction emergency evacuate evacuation gathering get together green group meeting meeting place meeting point message outside people place point sign staff white workers balls curves globe globes greenery lamp-posts lampposts lamps large blue-metal chips close-up concrete embedded granite gravel heavy near pebbles rocks rough shaped size Sizes slab slabs solid stones strength strong surface texture textured thick