appearances arid Cacti cactus clumps clusters coloring colors colouring colours display edge edges flora garden garden-display garden-plants irregular leaves light ornamental perennials plants pointed protection shape shapes succulents surface surfaces textures unusual angles architectural architecture bush bush-park cover covered covering freestanding fun gazebo grass grassed kiosk natural nature open park park-pavilion pavilion public relaxation roof roofing rotunda shade shadows shelter sunlight sunshine top city city traffic dark darkened directions early evening hazy lighting lights pedestrian bridge pedestrians rain reflecting reflections road conditions road curve shining shiny Singapore street light traffic traffic flow traffic lights vehicles weather wet