Singapore , officially the Republic of Singapore, and often referred to as the Lion City, the Garden City, and the Red Dot, is a global city and sovereign state in Southeast Asia and the world's only island city-state. It lies one degree (137 km) north of the equator, at the southernmost tip of continental Asia and peninsular Malaysia, with Indonesia's Riau Islands to the south. Singapore's territory consists of a diamond-shaped main island along with 62 other islets. Since independence, extensive land reclamation has increased its total size by 23% (130 km2), and its greening policy has covered the densely populated island with tropical flora, parks and gardens.