Finland is a Nordic country located in Northern Europe with a population of around 5.4 million. Its capital and largest city is Helsinki. Some notable UNESCO World Heritage sites include Sammallahdenmäki Bronze Age burial site, the Suomenlinna sea fortress in Helsinki, and the Old Rauma wooden city center. The official languages are Finnish and Swedish. Finnish mythology was traditionally passed down orally and features gods like Ukko the sky god and nature spirits. Tuonela referred to the underground land of the dead.