angle angles appearances barrier bridge caged concrete contained cover covered footbridge freeway light mesh metal overpass path patterns pedestrian perspective perspectives protection protective public ribbing roof roofing safe safety secure security shadow shadows shelter sheltered steel sunlight sunshine support tunnel tunnelled walkway aged alert area backdrop background blank bolt bolts brown copy fence grunge grungy icon industry inform information isolated old paint painted placard plank planks plaque retro risk rust rusty sign space square texture triangle wall weathered white wood wooden yellow abstract celebrate celebration choral church classical column craftsmanship flute formation group high instrument interior low mathematical mathematics mouth music musical orchestra organ pattern pipe pipes pitch prospect religion religious service shape shiny similar sound straight tube tubes tune wedding appearance architectural-elements barred bars black bush bushland dark decorated decorative distinctive entrance exterior external gate gate-posts gateway grille heavy open ornamental park parkland post shade spikes stone strength strong track access accessible across barriers bright construction cycle cyclists estuary handrails inlet lighting ocean ocean-view pathway pedestrians railing rails shared sharing solar-lighting solar-panels span surface surfaces trees vegetation water