cover covered metal open-sided paved paving pedestrians people posts ribbing roof roofing rounded shelter steel support walking walkway covered bridge crossing river usa wood wooden angles appearances arch arched arches architectural architectural elements architecture sheltered dark darkened height high light perspective perspectives planks secure security shade shadow shadows sunlight sunshine view views buildings bus city colored colorful coloring colors coloured colourful colouring colours covered walkways cross-roads double-decker bus Hong Kong over-pass pedestrian walkways pedestrian-overpass road roads taxi traffic transport transportation turning vehicles beams bricked bricks brickwork colonnade columns historic pathway pavement pedestrian pillars stonework strength strong structure structures concrete contemporary contrast contrasting decorative design distinctive elements exterior external foliage garden green greenery linear lines low modern peace peaceful plants quality shapes shrubbery shrubs Sizes style styles supports tiled trees variety walkways