Rjukan

Highest summit south of Hardangervidda and highest in Telemark, a distinct profile. About 1/6th of Norway can be seen on clear days. 30,000-40,000 people hike to the summit every year, taking approximately 2-3 hours from Stavsro, where you can park the car. You can also take the Gaustabanen Cable Car inside the mountain.

Situated in the Vemork hydroelectric plant, on the very grounds of the Heavy Water Sabotage during World War II, Vemork has several exhibitions about the local history of the industrial worker as well as war exhibitions.

Has a vast collection of old houses, and old things. Showing how life was in the rural parts of Tinn and in old times, before the town Rjukan was established. Open-air museum with no attendants.

The 16-km-long railway was operational between 1927 and 1991. In Mæl cargo (consisting mainly of chemicals produced in Hydro's fertilizer plant) was loaded onto ferries for transport across the lake to Tinnoset. In 1944 a steam ferry Hydro was sunk on the way from Mæl (as a part of Norwegian heavy water sabotage) with a cargo of heavy water for Nazi nuclear weapon project.

A small train takes you 1 km into the mountain, before you go on the cable car which takes you almost 1 km up towards the top of the summit Gaustatoppen, Southern Norway's highest summit, from which you can see 1/6th of Norway on clear days. Former military use, which was open to public in 2011.

Norway's 6th biggest skiing resort.