Tuhia he tohumate mo tēnei wāhanga - I te 34 o ona tau, i mōhiotia a Fehn i te ao whānui mō tana hoahoa o te Pavilion Norwegian i te Whakaaturanga o te Ao o Brussels i te tau 1958
He aha? I nga tau 1960 i hangaia e ia nga mahi e rua kua noho tonu i roto i tana mahi: te Nordic Pavilion i te Venice Biennale (1962) me te Whare Taonga o Hedmark i Hamar (1967<unk>79). Ko etahi atu mahi whakahirahira ko te Whare Taonga Glacier Norwegian i Fjærland (1991-2002) me te National Museum of Art, Architecture and Design i Oslo (2003 <unk>08).