The intervention for an expansion of the existing Museum of Viking History in Oslo consists of four architectural elements, different in its characteristics and functions, but in a vital relation with each other, with their preexistence and the suburban and landscape context in which they are inserted. Such a composition produces concretely an articulate and flexible museum structure, capable of evaluating in an hidden manner and through an architecture that actively takes part at the engaging narrative of an ancient era, maybe the most fascinating of Norwegian history, the cultural contemporary value of the viking collection. The proposal tries to combine an architecture of the matter, which is not ephemeral and therefore eduring and timeless, with the necessity to protect and preserve one of the Norwegian cultural strongholds, describing through an architecture of psychologically interactive spaces a historical and mythological era, in accordance with the contemporary dinamics of usability in museum areas.