Turku.

Turku is Finland's second largest seaport and an important industrial base. It is located on the southwest coast of the country, on the Gulf of Bothnia, 170 kilometers east of the capital Helsinki (it was the capital of Finland until 1812). The urban area covers an area of ​​24 square kilometers and has a population of 180,000; including the suburban area, it covers an area of ​​81 square kilometers and has a population of 240,000. It is now the regional center of southwestern Finland with well-developed industry, with the shipbuilding industry ranking first in the country; oil refining, cement, metal processing, textiles, cigarettes, wood processing and other sectors are also important. The water depth of the harbor channel is about 9 meters, and the nearby sea area is almost ice-free all year round, allowing navigation throughout the year. There are many historical sites, including ancient castles🏰, churches⛪️, and universities