Ski is a town and former municipality in the new municipality of Nordre Follo Municipality in the greater region Follo, in Akershus county, Norway. Ski is the most populous and largest town in Follo, and serves as the de facto municipality center of Nordre Foll…Ski is a town and former municipality in the new municipality of Nordre Follo Municipality in the greater region Follo, in Akershus county, Norway. Ski is the most populous and largest town in Follo, and serves as the de facto municipality center of Nordre Follo. Institutions like the hospital, tingrett, police station, and other regional public services, are located in and around the town of Ski.