Östermalmsfängelset, Former prison building in Östermalm, Stockholm, Sweden

Östermalmsfängelset was a red-brick prison built 1895–1897 to Gustaf Lindgren's design, a medieval-inspired brick castle on a granite base with carved limestone details, entered through a large wrought-iron gate. It stood in the triangular block between Uggelviksgatan, Östermalmsgatan and Rådmansgatan, beside Engelbrektskyrkan, and held 115 cells. It was demolished in 1968 for the Arkitekturskolan building.

The prison was built between 1895 and 1897 to replace the Norrmalm county cell prison, which was demolished the following year, following the 1841 Riksdag decision that set new requirements for cell-based prisons. Architect Gustaf Lindgren designed the building. After 27 years of use, the last prisoners left in 1925, when the National Archives took over the premises. The building was demolished in 1968 to make way for the School of Architecture.

The prison was initially intended for women but also held male inmates, and meals were passed through the cell door in a fixed tin hatch with three bowls. The exercise yards were laid out as wedge shapes on the prison courtyard, and a dark punishment cell stood in the basement. The building was demolished in 1968, so only the site between the three streets remains.

The prison was demolished in 1968, so nothing of the building remains; the site is now occupied by the Arkitekturskolan building in the triangular block bounded by Uggelviksgatan, Östermalmsgatan and Rådmansgatan, next to Engelbrektskyrkan. Look for the block itself rather than a preserved structure.

The building was demolished in 1968 to make way for the Arkitekturhögskolan (School of Architecture). Between 1925 and 1926, Johan Gunnar Andersson's collections from his excavations in China were stored here; they later formed the basis of the Museum of Far Eastern Antiquities.