Norsk Folkemuseum- I went here to see the Gol Stave Church. The scent of wood is intoxicating, and the church is illuminated with natural light only. The presence of the Viking spirit is evident in the way the church resembles a Viking ship, and there is a feeling of strength when you are inside the church.
The Viking Ship Museum- It is here that you can see the world's best preserved Viking ship, and learn new information about the culture. I was mesmerized by the size and beauty of the ships.
Kon-Tiki Museum- I must admit that I knew nothing about this story before visiting this museum, and it's a really cool story about a man believing in himself and making dreams come true.
Vigeland Sculpture Park- The world's largest sculpture park made by a single artist. The sculptures are unique and it is a lot of fun to just walk around and discover new pieces.
Ibsen Museum- What made this museum so enjoyable for me was the private tour we took of Ibsen's house with a very knowledgable young woman.
Nobel Peace Center- This is a place that gives you hope, and reminds you of the good people in the world that are fighting.
Lokk- I didn't have a bad meal when in Oslo, but I think my favorite meal was at Lokk. The chef creates a perfect balance of flavors in the dishes, and the atmosphere is cozy. I had the potato soup with chorizo to start, and the duck with red cabbage, kale and pearl barley as my entree. It was a meal to remember.
Lillie Herbern- Part of the fun of this restaurant, is that you take a tiny boat to a tiny island to eat here. I had delicious, fresh seafood; mussels, oysters, and fish & chips. All of it was great, and this is a perfect place to grab a bite after visiting the Kon-Tiki Museum and the Fram Museum.
Skur 33- I ate my first whale carpaccio here, and it was quite tasty. I also had to get the lobster pizza, which you don't see every day, and was also tasty. The restaurant is on the water, and has great service with a cute atmosphere.
Mathallen Food Hall- This is a wonderful gourmet food market to have a beer and a couple of fancy foods to eat.
Syverkiosken- Oslo is known for their late night hotdog eating, so I wanted to try one on my last night in town. I heard about this place, and got the special pølse with jalapeños. It was great! Make sure you bring cash as the credit card machine seems to have difficulties sometimes.
Hønse-Lovisas Hus- A wonderful cafe to start your day at. It's located in an 1800's sawmiller's house along the river Akerselva, and it is a tranquil place to enjoy a cup of coffee.
Aku-Aku- A perfect place to get a drink after looking at ships all day, and especially after visiting the Kon-Tiki Museum. The bartenders make a great tiki cocktail, and the atmosphere is exactly as it should be for a tiki bar.
Bar Boca- A fantastic looking 50's style dive bar packed with friendly people. We managed to get a seat and enjoy a beer.
Tim Wendelboe- This is where you go for really good, really fancy coffee. It's not a place to hang out. I think they have 2 tables max, so get your coffee and be prepared to scoot. The flavor is delicious though, so you won't be disappointed. They also have cute postcards to send to your friends, so you can tell them how good the coffee tastes.
Cafe Alfred- A cafe at the Nobel Peace Center that is, well, peaceful. They play great music, the staff is super friendly, and the latte is good.
Underwater Pub- A charming bar that makes you feel like you are about to go on a diving expedition. Unique vintage tables and chairs, and just charm all over the place.
Oslo is in fact one of the most expensive places to visit, so I recommend you try to save a little money by booking an apartment on Airbnb. I stayed in the Grunerløkka area, which worked out good for getting around the city, and for experiencing a neighborhood with locals.
Read Lords of Chaos before you go or while you are there. It gives you in-depth knowledge of the Norwegian black metal scene, but it also gives you an idea of the country that created that scene. You can buy it at a brilliant bookstore Tronsmo that sells a great selection of English books.
Go to Emanuel Vigeland Museum- I so wanted to go to this museum, but because of it's very limited hours I missed out. Plan your trip so that you can go.
I think it's obvious that you should go see all of the Munch attractions. If you go to the cemetery where he is buried, Vår Frelsers gravlund, you can also see Ibsen's gravesite too.
Shop at Lush Dive, a sweet, curated store filled with wonderful products for your paper, pencil, and journal writing needs.