Singapore, city, capital of the Republic of Singapore. Its strategic position on the strait between the Indian Ocean and South China Sea, complemented by its deepwater harbour, has made it the largest port in Southeast Asia and one of the world’s greatest commercial centres. The city, once a distinct entity, so came to dominate the island that the Republic of Singapore essentially became a city-state. Singapore—known variously as the “Lion City” or “Garden City,” the latter for its many parks and tree-lined streets—has also been called “instant Asia” because it offers the tourist an expeditious glimpse into the cultures brought to it by immigrants from all parts of Asia. While predominantly Chinese, it has substantial minorities of Malays and Indians.