abstract angles appearance architectural architecture blue building contemporary contrast contrasting elements exterior external geometric geometric-shapes glass height high high-rise light linear lines modern panelling panels patterned patterns perspectives recessed reflections reflective rows skyscrapers square square-patterned squared surface surfaces textured textures unusual variations various views wall walls appearances box-like buildings business-district city city-scapes city-views color colour distance distant distinctive gray grey heights office-buildings offices rectangles rectangular style windows curve curved Hong Kong office buildings wealth CBD circular colors colours concrete photographer round rounded Singapore arched arches christian church church-complex community cross cupola decorated decorative domed edged edges faith heritage historic historical history ornament ornamental ornamentation religious roof roofing traditional colored coloured skies sky business district city scapes city views