Riksgränsen (Swedish for 'National Border'; Norwegian: Riksgrensen) is a Swedish ski resort located at the northwest edge of Kiruna Municipality in Lappland, next to the Norwegian border. The skiing season is from February to June, and from the end of May the lifts operate under the midnight sun. One of the pistes cross the border to Norway and back to Sweden, where there is no border control due to the Schengen Agreement. It is the most northerly ski resort in the world, being roughly 200 kilometres (120 mi) north of the Arctic Circle.
https://en.wikipedia.org/wiki/Riksgr%C3%A4nsen