The Oulanka National Park Located in the Finland. It has oldest national park in the country. Ant Architects Notable among the 7,000 insect species in the park are wood ants, which build tall nests some three feet (one meter) high. It was established in 1956 and was expanded again in 1982 and 1989 and it borders with Paanajärvi National Park in Russia. Oulanka National Park is in a rather remote upland region of North Ostrobothnia and Eastern Lapland.