Completed in 1880, for over a hundred years the school, at 71b Drottninggatan in the Norrmalm district of Stockholm, offered an education that emphasized Greek, Latin and classical studies.

It has been part of Stockholm International School since 2023 August 17 The building was designed in Neo-Renaissance style by Helgo Zetterwall and was inaugurated in 1880 in the presence of, among others, Church of Sweden Archbishop Anton Sundberg, King Oscar II and Crown Prince Eugen.

[1] The architecture follows the 19th-century academic drawing tradition and incorporates glazed atriums on three floors with Romanesque arcade passageways and surrounding classrooms.

By 1989 conversion of the former school building was complete, and it was renamed City Conference Centre, Stockholm (CCC).

In conjunction with a neighbouring building, Folkets Hus ("House of the people"), the conference centre can accommodate as many as 4,000 attendees.