marina bay sands hotel singapore

facade skyscraper stadium architecture roof arena line building headquarters iron landmark tower condominium design integrated resort fronting marina bay singapore opening deemed world's expensive standalone casino property billion us6 includes 561-room hotel 120 000-square-metre 300 000 convention-exhibition centre 800 shoppes sands mall museum large theatre celebrity chef restaurants two floating crystal pavilions art-science exhibits largest atrium 500 tables 600 slot machines