Porvoo is a city and a municipality in the Uusimaa region of Finland, situated on the southern coast about 35 km east of the city border of Helsinki and about 50 km from the city centre. Porvoo was one of the six medieval towns of Finland, along with Turku, Ulvila, Rauma, Naantali and Vyborg. It is first mentioned as a city in texts from the 14th century. Porvoo is the seat of the Swedish-speaking Diocese of Borgå of the Evangelical Lutheran Church of Finland. Porvoo was briefly the capital of the former Eastern Uusimaa region.