Oslo is the capital and largest city of Norway. Oslo has been voted one of the most expensive cities in the world, but seems to get lower and lower every year. It is still affordable to see the sites and accommodation is not outrageous. A good thing about Oslo is that it is not an extremely popular city for vacationing, so you don't have to worry about a huge amount of tourists during Spring Break and other holidays. That means that you won't have to wait in line to see these top must-do's.

5. Royal Palace - Even if you just come here for the view, it is far worth it. The main street in Oslo runs straight to it, making it hard to miss. It is now the residence of the Norwegian Monarch and was built in the 19th century for the residence of the Norwegian/Swedish king.

4. Viking Ship Museum - If you are a fan of Viking history, this is the place for you. This museum boasts 3 antique Viking ships form Gokstad, Oseberg and Tune and many amenities of the ships and those used during Viking times. This museum is another presentation from the University of Oslo. Adult admission is a bit over $8. Check out the Oslo Pass for free admission to most of these places.

3. Natural History Museum - This is an archaeologists dream. This museum is located in the University of Oslo and boasts amazing and ancient preserved plant specimens, fossils, ancient minerals and more. Entrance is a little over $8 and includes the Geological Museum, Zoological Museum and Botanical Gardens.

2. Arkeshus Fortress - This castle built in the late 13th century has survived many attacks from enemy forces, most notably the Swedish. The castle holds the Norwegian Armed Services Museum and the Norwegian Resistance Museum. It is still used by the military but open to public. Entrance fee is about $7 for adults.

1. The Øya Festival - This festival is unlike many around the world. The fun begins in the distinguished Medieval Park, but extends the borders after 11pm. There is also a club night included in one of the 4 nights of the concert. With a festival pass, you will get into one of the 30 venues, all in the downtown area, for free to see shows. To get a festival pass, it is expensive, around $304, but it is non-stop fun for 4 straight days.