One super popular hike is climbing Gaustatoppen in Telemark, Norway.
Elevation 1,883 m (6,178 ft)
Prominence 950 m (3,120 ft)
On a clear day from on top you can see 1/6 of the country.
There are a number of routes up from fairly easy to very difficult.
There is a funicular railway inside the mountain, built for military purposes but now available to tourists.
Atop is Gaustatoppen Tourist Cabin which serves delicious waffles as you will definitely see in this promo video.
Click PLAY or watch it on YouTube.