Helsinki is the capital and largest city and the largest port in Finland. It is also the center of the Finnish economy, politics, culture, tourism and transportation, and a world-famous international metropolis. The city has been rated as one of the most liveable cities in the world for many years. Adjacent to the Baltic Sea, Helsinki is a city where classical beauty and modern civilization are integrated, and a garden city with a combination of urban architecture and natural scenery. The city's buildings are mostly made of light-colored granite. It is known as the Northern White City and can be used to take a boat to Estonia. It is a good choice.