The temple-like school gymnasium building was designed by architect Per Emanuel Werming and was completed in 1881. It is characterized by an impressive gable architecture with a rusticated base and open pediments on the gables that face the street to the west and rear courtyard toward the original school building to the east. The building was severely damaged by fire to the extent that only the gables could be saved. Following earlier, unsuccessful attempts to redevelop the site, Andreas Martin-Löf Arkitekter were commissioned in 2018 to develop a proposal for the conversion of the building into apartments and commercial spaces in ground floor and basement.