OuluOulu (ˈoʊluː , ˈou̯lu; Uleåborg ʉːlɛɔˈbɔrj) is a city, municipality and a seaside resort of about 210,000 inhabitants in the region of North Ostrobothnia, Finland. It is the most populous city in northern Finland and the fifth most populous in the country after: Helsinki, Espoo, Tampere and Vantaa, and the fourth largest urban area in the country after Helsinki, Tampere and Turku. Oulu's neighbouring municipalities are: Hailuoto, Ii, Kempele, Liminka, Lumijoki, Muhos, Pudasjärvi, Tyrnävä and Utajärvi.
EspooEspoo (ˈɛspoʊ, ˈespoː; Esbo) is a city and municipality in the region of Uusimaa in the Republic of Finland. It is located on the northern shore of the Gulf of Finland, bordering the cities of Helsinki, Vantaa, Kirkkonummi, Vihti and Nurmijärvi while surrounding the enclaved town of Kauniainen. The city covers with a population of about 300,000 residents in 2022, making it the 2nd-most populous city in Finland. Espoo forms a major part of a substantially larger metropolitan area known as Greater Helsinki, home to over 1.
TurkuTurku (ˈtʊərkuː ; ˈturku; Åbo, ˈoːbu) is a city and former capital on the southwest coast of Finland at the mouth of the Aura River, in the region of Finland Proper (Varsinais-Suomi) and the former Turku and Pori Province (Turun ja Porin lääni; 1634–1997). The region was originally called Suomi (Finland), which later became the name for the whole country. As of 31 March 2021, the population of Turku was 194,244 making it the sixth largest city in Finland after Helsinki, Espoo, Tampere, Vantaa and Oulu.