adelaide angle angles arched barrier bridge bright concrete curved footbridge handrail lights overpass park path patterns peaceful pedestrian perspective perspectives posts protection public park railing rails recreation recreational area relaxing river river-crossing safety shadow shadows steel sunlight sunshine walkway waterway abstract angled appearance background blended checks color colored colorful colour coloured colourful cross crosses decorative design details interconnected interlinked interwoven light linear lined lines pointed points radiating shape shaped shapes squared squares star stars style texture textured textures thick thin tiled vibrant wall wallpaper brown coloration colors colours decoration geometrical lighting patterned square surface surfaces tubes tubular weave woven computer wallpaper line material pattern stairs steps window covering gold graphic orange rectangles ribs waves bricks brickwork coloring colouring designed Designs detailed detailing distinctive geometric geometric-shapes level secure security smooth surfaced walled zigzag zigzagging architectural architecture ascending covered descending descent down downward empty escalator escalators floor height high inside interior levels long metal move movement moving narrow progress sheltered stair steep step storey transport transportation travel travelling UP up-and-down upward appearances caged contained cover freeway mesh protective public ribbing roof roofing safe shelter support tunnel tunnelled