Whakakihia te rerenga e whai ake nei: I te 34 o ona tau, ka whiwhi a Fehn i te rongonui o te ao mo tana hoahoa o te Pavilion Norwegian i te
1958 Brussels Whakaaturanga o te Ao. 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).