Oslo being the first Opera House in the world to let people walk on the roof of the building. The foyer and the roof are also used for concerts as well as the three stages. Most great Norwegian authors have lived in Oslo for some period in their life. For instance, Nobel Prize-winning author Sigrid Undset grew up in Oslo, and described her life there in the autobiographical novel "Elleve år" (1934; translated as "The longest years"; New York 1971). The playwright Henrik Ibsen is probably the most famous Norwegian author. Ibsen wrote plays such as "Hedda Gabler", "Peer Gynt", "A
Peer Gynt Hegel, his publisher, with his plan for the play: it would be "a long dramatic poem, having as its principal a part-legendary, part-fictional character from Norwegian folklore during "recent" times. It will bear no resemblance to "Brand", and will contain no direct polemics or anything of that kind." He began to write "Peer Gynt" on 14 January, employing a far greater variety of metres in its rhymed verse than he had used in his previous verse plays "Brand" (written 1865) or "Love's Comedy" (written 1862). The first two acts were completed in Rome and the third in Casamicciola on the