angles appearances architectural architectural elements architecture building city clan clan building clans colors colours contrast contrasting decorated decorations decorative distinctive doors elements exterior external gates gateway green historic historical history linear lines old ornamental ornamentation patterns perspectives red reflections reflective shade shadows Singapore style sunlight textures views walls arched austere closed-doors dark Designs detailed government government-buildings gray grey grime handrails height heritage high light pillars power quality solid sound steps strength structures support windows arch banners color colored colour coloured display distinct Flags flow four-storeys-high gardens Istana-Park National-Day nationalism park Patriotic patriotism pools pride reflecting-pools water