angled angles appearances architectural architecture building buildings city city-scapes city-views color colour contemporary contrast contrasting distinctive edged edges elements exterior external framed frames geometric geometric-shapes glass gray grey height high high-rise light linear lines modern patterned patterns perspectives sharp Singapore steel surface surfaces textured textures views wall walls windows accommodation apartment-blocks apartments architectural-elements balconies balcony box-like colors colours concrete condominiums condos costly curved distance distant expensive heights holidays multi-storey multi-story recessed skyscrapers tourism tourists wealth art-deco complex condo condominium dark detailed façade flats heritage historic metal modernistic plain protection quality safety straight structures style supports tall units valuable sepia hotel hotels