Same as the rest of the people here are saying.. Vigelandsparken but also the new oprahouse..you can walk on the roof of it...Take one of the boats over to Hovedøya or one of the other small eislands from Aker Brygge...Also a lot of nice restaurants along Aker Brygge if u like to enjoy a cold bear outside with the wev of Oslo fjorden and great boats. You also should see our Kings Castle..Walk up Karl Johans Gate to take in the city and the castle is on top of it..you will also pass the Stortinget along the way...Enjoy and Welcome to Norway.

Viggeland Park,Viking Museum, Folke Museum, Munch, Fram Museum, Kon-Tiki

Also the Viking Ship Museum!

Viggeland Park--of course! And also the Edvard Munch Museum!

Viggeland Park is so beautiful especially when it's roses blooming time:) Also it's worth visiting the Akershus Fort and Castle, the waterfront - Aker Brygge and it's very interesting to see the changing of the guard ceremony in front of The Royal Palace.

go to the out door sculpture garden