The capital of Norway is a busy place, compared to the rest of Norway, but relaxed compared to many world cities. Tourists may like the Aker Brygge harbour with its many restaurants, the Vigeland park with its many naked statues and possibly the huge Holmenkollen ski jump.
The Geiranger Fjord is famous thanks to its natural beauty and the many waterfalls. The best views can be had from Geiranger village. It is UNESCO heritage and featured on most post cards.
The Sognefjord is nicknamed the King of the Fjords and the largest and deepest fjord in Norway.
Hammerfest claims to be the most Northern "city" in the world. It is also close to the North Cape. In winter you wont have much light, in summer the sun shines all day long.
The most Northern point of Europe has a large metal globe as a proof. In summer it is memorable to stand here in the middle of the night and watch how sunset and sunrise merge over the Nordic sea, without the sun ever disappearing.
Tromso is one of the most northern cities in the world. It is one of the best places to see the Northern Lights between november and februari.
Bergen is the second largest city in Norway and known for the colourful harbour and (unfortunately) the rain. From here there are great trips to Voss and Flam.
Flåm is known for a trip called "Norway in a Nutshell", consisting of train and ferry rides.