Located on the shore of the Gulf of Bothnia, Oulu is the most important city in Northern Finland and the sixth largest city in the country. It is the major university and science city. Several museums are dedicated to science and a visit to the Science Centre Tietomaa is a must. Tietomaa hosts all sorts of scientific things of interest. Various technologies are explained and there are lots of things to learn about and you're allowed to play with everything. Another interesting sight is the Oulu City Hall - a neo-renaissance stone palace, completed in 1887, housing a part of the City's central administrative office. The Oulu Cathedral represents neo-classical style and was originally built in 1777. It houses Finland's oldest painted portrait from 1611. Don't miss Oulu's botanical gardens where you will find the northernmost pyramids in the world.