 The goal was to build a suburban tramway—the Holmenkoll Line—from the Holmenkollen neighborhood in northwestern Oslo to the end of the street tramway at Majorstuen.The line opened first to Besserud (at the time called Holmenkolen) on 31 May 1898 and then to Frognerseteren on 15 May 1916.The second part of the line was constructed by its subsidiary A/S Tryvandsbanen, and included a single track cargo line to Tryvandshøiden.