He studied architecture at the Bauakademie in Berlin 1869 -- 74 .
After his final exams in 1866 , Nissen was a student at the Royal Drawing School in Christiania .
Nissen studied architecture at the Bauakademie in Berlin 1869 -- 74 .
After his final exams in 1866 , Nissen was a student at the Royal Drawing School in Christiania .