Finland Proper (historical province)
Finland Proper or Southwest Finland (Finnish: Varsinais-Suomi; Swedish: Egentliga Finland) is a historical province in southwestern Finland, administered by its historic capital of Turku (Swedish: Åbo). Before the Treaty of Fredrikshamn in 1809, it was part of Sweden. It borders Satakunta, Tavastia (Häme), and Uusimaa. It is also bounded by the Baltic Sea facing Åland.
The modern region of Southwest Finland largely corresponds to the historical province. However, the modern region includes Loimaa, which was historically part of Satakunta, and Somero, which historically belonged to Tavastia.
Southwest Finnish dialects are spoken in Southwest Finland.