Berg station was opened on 10 October 1934 , when the municipally owned company Akersbanerne had completed the Sognsvann Line from Majorstuen to Sognsvann . Residential areas at Sogn , Tåsen and Berg was starting to grow , in pace with a larger suburban development plan . Akersbanerne bought new property along the line , upon which new houses was to be designed by the Norwegian architect Kristofer Lange ( 1886 – 1977 ) .