Wikipedia
Tryvandshøiden (also Tryvannshøgda, Tryvann and Øvreseter) was a planned station on the Holmenkollen Line in Oslo, Norway. It was planned by the company Tryvandsbanen in the early 1910s and partly constructed in 1916 at the end of a single-tracked line from Frognerseteren. A red signalman's house named "Norden" was the station's only facility. Passenger trains never served the station, and the tracks from Frognerseteren to Tryvandshøiden were removed in 1939. The signalman's house was not demolished. In 1993, 2004 and 2008, proposals were made to re-open the station so that it would be more convenient for Oslo residents to use the Tryvann Ski Resort. However, these proposals were all rejected by the operator Oslo Sporveier on the grounds that the extension would be too expensive.