Wielkopolanin
Google
I understand importance of art which Henrik Ibsen have given to world and especially Norwegian literature and history, but if you are going to Oslo from outside and just for tourist reasons, without special interest in Ibsen personal life, I would recommend to skip this one, there is I would say poor exhibition of his personal belongings, some stories and modern day art showing Ibsen like images/icons/sculptures and his house which is nice is only available with guide in certain hours, in my was was 2PM. You can enter for free with Oslo Pass. It wasn't best place while visiting Oslo, didn't impress me, so I would recommend to majority of people with same tourist motive to skip it.