Gaustabanen is a unique mountain funicular inside Gaustatoppen in Telemark, Norway. Originally built as part of a top secret NATO facility during the Cold War, it opened to visitors in 2010.
The journey takes you 850 metres into the mountain aboard the tram before you transfer to the funicular, which climbs another 1,050 metres to the Summit Station. The trip takes 15 minutes. From there, it's just a short walk to the summit of Gaustatoppen.