abstract appearance architectural background colors colours decorative Designs details distinct distinctive edged edges exterior external fancy interconnected interlinked light linear lined lines mosaic patterns perspectives rectangular rough shaped shapes slabs smooth stone stonework strength style surface surfaces textured textures thick thin tiled tiles uneven variation varied various wall wallpaper angles appearances architecture box-like buildings business district CBD city city scapes city views concrete contemporary contrast contrasting distance distant elements glass heights high high rise Hong Kong modern office buildings reflections skyscrapers sleek slim views walls wealth windows