Marina Bay in Singapore is a vibrant waterfront district that's part of the city's downtown area. It's surrounded by four planning areas and features iconic landmarks like Marina Bay Sands and Gardens by the Bay. With a mix of commercial, residential, and entertainment spaces, Marina Bay is a 24-hour hub where people can work, live, and play. The area underwent extensive land reclamation in the 1950s to create this prime waterfront location, which has since become a key focus area for urban development in Singapore.