The capital city of the Republic of Singapore is Singapore itself. Officially a city-state, Singapore is known for its vibrant urban landscape, advanced infrastructure, and diverse cultural heritage. As a major global financial hub, it plays a crucial role in international trade, finance, and commerce. The city is famous for its cleanliness, green spaces, and robust public transport system. Landmarks such as Marina Bay Sands, Gardens by the Bay, and the historic districts reflect both its modernity and rich cultural diversity. The efficient governance and strategic location contribute to Singapore's status as a melting pot of cultures.