access accessibility angles architectural architecture baluster balusters balustrade banister between-floors craftsmanship descending down handrail inside interior moulded-shaft perspectives polished skilled stained staircase stairs steps turn turning wood wooden woodwork circular corner dark diffused-light gray grey intricate light limited patterned patterns shadowy silhouette spiral spiral-staircase spiraling spiralling structure sturdy turns window wrought-iron a challenge aid angle backdrop background diagonal fit fitness guideline old age outdoors perspective stair stairrail stairway stone structures success training upstairs upwards way to go carpet carpeting modern painted walls white abstract angled empty escalator escalators floors height high levels metal move movement moving multi-level progress shopping-center shopping-centre step storeys transport transportation travel bedrock colors colours formation heritage historic Historic site kiln kilns landscape lime-kilns park patched patchwork repairs rock rock-work rocks rubble ruins shadows stone-steps stone-wall stone-work stones sunlight surfaced surfaces surfacing texture textured textures trees variations varied vegetation wall arch arched arches brown building building-complex china chinese Chinese-complex Christian-center Christian-centre cobbled covered driveway entrance Hong-Kong paved paving style Tao-Fong-Shan walled greyscale appearance basic concrete cracked cracks edge edged edges exterior external going-up lined lines outside rough rugged safety secure shape shaped solid steep surface thick UP