The history of Soria Moria dates back over 100 years. On this property, Voksenkollen Sanatorium was built in 1900 by the entrepreneur Christian Lund Holm (1844-1918). He was successful in his projects during that time, which included Dr. Holms in Geilo and Holmsberg near Vettakollen. The architect behind the building was Ole Sverre. Voksenkollen was advertised as a place for wealthy Norwegians and foreigners, offering excellent opportunities for outdoor activities and sports.
Among the frequent guests of the sanatorium was the musician Edvard Grieg. He referred to the place as “my Soria Moria,” which inspired the present-day name.
In 1919, the sanatorium burned down completely, and a guest was charged with arson. The land remained vacant for many decades. In 1983, a new Soria Moria was built as the Norwegian Medical Association’s training and conference center, following an architectural competition in 1978 (architects Telje-Torp-Aasen Arkitektkontor A/S).