Turku is one of Finland’s biggest cities with roughly 175,000 residents. It is situated in the Southwest area of Finland. Previously Finland's capital, Turku just celebrated its 778th birthday in 2007, making it the oldest conurbation in Finland. It is home to Turku Cathedral, the mother church of Lutheran Finland. The Aura River runs through the conurbation as it flows toward the Baltic Sea. Turku also has a charismatic fortress that sits alongside the shore in a charming setting. The souk serves as the center for the local bus system as well as the center to buy fresh fish, produce and Finnish souvenirs. There are also diverse places in the conurbation in which to view renowned Finnish artwork such as the Wäinö Aaltonen Museum, the Aboa Vetus & Ars Nova (Old Turku/New Art) or the Turku Art Museum.