 Designed by the Danish architect Christian Mandrup-Poulsen (1865–1952), the school was established on 1 August 1924 by the Danish Sisters of St. Joseph who arrived in Denmark in 1856.They had already established another school, the Institut Sankt Joseph in the Østerbro district of Copenhagen in 1858.The three-winged red-brick building, consisting of four storeys and a mansard, housed 29 classrooms.