For local people visiting Lake Oulujärvi is like going to the seaside. It is the widest stretches of open water in Finland and one of the largest lakes here. We have a cottage or "mökki" there. I don't like that place very much, but i love the lake nonetheless, especially that one particular island called Ärjä. We were rowing with my brother at night. It was very cheerful and fun. Oulujärvi is also called "The Sea of Kainuu".