EntityQ2287837· pop 7· linked from 731 articlesFort WarrenSign in to savefort in Boston HarborConnectionsUnited States Military AcademyEntityWorld War IIConceptWorld War IConceptMassachusettsEntityBostonEntityrockEntityAmerican Civil WarConceptInternational Standard Book NumberEntitygraniteEntityConfederate States of AmericaEntitypentagonEntityfortificationEntityAmerican RevolutionEntitySpanish–American WarEntityFederal Government of the United StatesEntityWestern FrontEntityKriegsmarineEntitySuffolk CountyEntityminesweeperEntityNational Park ServiceEntityCategories1833 establishments in MassachusettsAmerican Civil War fortsAmerican Civil War on the National Register of Historic PlacesAmerican Civil War prison campsBoston HarborDefunct prisons in MassachusettsForts in BostonForts on the National Register of Historic Places in MassachusettsHistoric districts on the National Register of Historic Places in BostonMassachusetts in the American Civil WarMilitary and war museums in Massachusetts