Norway is well known for its viking history and you can get a glimpse into the past at the Viking ship museum where on display is the incredibly well-preserved Oseberg ship, dug up from a burial mound. Several other ships and a range of viking burial artifacts are also housed here.
Continuing the seafaring theme, the Kon-Tiki museum houses artifacts from the many journeys of adventurer Thor Heyerdahl, famous for his crossing of the Pacific on a balsawood raft. A fascinating sight in Oslo that is a must for any adventurous spirit.
Oslofjord, referring to the bay on which Oslo sits and stretching out to the Kattegat sea, is a wonderful nautical playground often full of watercraft heading from place to place. Rent a canoe or kayak and paddle along the waterfront or head to an island for a taste of nature.
Frogner Park is best known for the twisting humanoid shapes of the Vigeland sculpture installation it hosts. Surrounded by lush green lawns, this park is a popular summer Oslo sight for locals to come and enjoy sunshine and fresh air.
The Holmenkollbakken ski jumping area is hard to miss, with its tower rising above the surrounding homes. Site of many international winter sports competitions, this highly-visible landmark has a museum and viewing platform giving visitors unobstructed views of Oslo city.
Set in sprawling open grounds, the Royal Palace gives visitors a sense of the grandeur reserved for Norwegian royalty. Open to the public in the summer, visitors can witness the changing of the guard every day at 1:30pm.