The National Historic Museum is a wonderful museum in Oslo. As most museums it has installations that are there for couple a few months and permanent exhibitions. At the National Historic Museum permanent exhibitions included items from other countries and culture’s histories and my favorite part, Viking era items.
Of course the big museum to check out for Viking era items would be the Viking Ship museum to see actual ships from the Viking era, but the National museum is where you can see other items such as clothing, day to day items used in the home, etc. It is unbelievable how well preserved the items in the museum are.
This museum is open on Sundays and is right in central Oslo so if you’re staying in central Oslo you can easily walk to the museum. It is also close to the Ice Bar so if you wanted to check that out you could do both in one day without a problem.