EntityQ4176816· pop 13· linked from 6 articlesKastelletSign in to savesmall citadel located on the islet Kastellholmen in central Stockholm, SwedenConnectionsWorld War IIConceptStockholmEntitygeographic coordinate systemEntityfortificationEntityKarlskronaEntityflag of SwedenEntitycitadelEntitySwedish EmpireEntityConstitution DayEntityexpatriateEntitySkeppsholmenEntityErik DahlberghEntityKastellholmenEntityhistory of StockholmEntityFredrik BlomEntityarchitecture in StockholmEntitySwedish coastal artilleryEntityCategories1848 establishments in Sweden19th-century establishments in StockholmBuildings and structures in StockholmForts in Sweden