Marina Bay Sands is an Integrated Resort fronting Marina Bay in Singapore. Developed by Las Vegas Sands, it is billed as the world's most expensive standalone casino property at S$ 8 billion, including cost of the prime land.n 27 April 2010, Marina Bay Sands had the first of a planned 3 to 4 phase openings. The casino, parts of the conference hall, a segment of the Shoppes, 963 hotel rooms and the event plaza were opened at the auspicious time of 3:18 p.m as part of the preview opening.