accommodation angles angular apartment blocks apartments appearances architecture balconies balcony box-like building city complex contrast contrasting dark Designs detailed distinctive elements exterior external glass heights high high-rise light linear lines metal modern modernistic multi-storey multi-story plain quality short-term straight structures style supports tall tower towering units value views windows angled architectural balcony-gardens blooming concrete costly designed expensive flowering flowers height plants potted-plants safety shade shaded sheltered shrubs Singapore sunlight sunshine valuable apartment-blocks art-deco condo condominium façade flats heritage historic patterns protection architectural-elements buildings colors colours condominiums condos contemporary curved distance distant holidays perspectives recessed skyscrapers surface tourism tourists walls wealth arched austere closed-doors decorated doors government government-buildings gray grey grime handrails old pillars power reflections solid sound steps strength support