| gptkbp:instanceOf | gptkb:historic_site 
 | 
                        
                            
                                | gptkbp:access | by boat only 
 | 
                        
                            
                                | gptkbp:addedTo | gptkb:National_Register_of_Historic_Places 
 | 
                        
                            
                                | gptkbp:addedToNationalRegisterOfHistoricPlaces | 1973-03-18 
 | 
                        
                            
                                | gptkbp:architecturalStyle | Third System fortification 
 | 
                        
                            
                                | gptkbp:built | 1858 
 | 
                        
                            
                                | gptkbp:completedIn | 1864 
 | 
                        
                            
                                | gptkbp:country | gptkb:United_States 
 | 
                        
                            
                                | gptkbp:currentUse | gptkb:public_park 
 | 
                        
                            
                                | gptkbp:garrison | gptkb:American_Civil_War 
 | 
                        
                            
                                | gptkbp:latitude | 43.6647 
 | 
                        
                            
                                | gptkbp:locatedOn | gptkb:Hog_Island_Ledge 
 | 
                        
                            
                                | gptkbp:location | gptkb:Portland,_Maine 
 | 
                        
                            
                                | gptkbp:longitude | -70.2353 
 | 
                        
                            
                                | gptkbp:managedBy | gptkb:City_of_Portland_Parks_Department 
 | 
                        
                            
                                | gptkbp:material | gptkb:granite 
 | 
                        
                            
                                | gptkbp:namedAfter | gptkb:Sir_Ferdinando_Gorges 
 | 
                        
                            
                                | gptkbp:neverArmed | true 
 | 
                        
                            
                                | gptkbp:notableFeature | bastions gun emplacements
 casemated granite walls
 central parade ground
 powder magazines
 
 | 
                        
                            
                                | gptkbp:NRHPReferenceNumber | 69000018 
 | 
                        
                            
                                | gptkbp:openToPublic | true 
 | 
                        
                            
                                | gptkbp:ownedBy | gptkb:City_of_Portland 
 | 
                        
                            
                                | gptkbp:partOf | Portland Harbor defenses 
 | 
                        
                            
                                | gptkbp:usedFor | gptkb:military 
 | 
                        
                            
                                | gptkbp:bfsParent | gptkb:Casco_Bay 
 | 
                        
                            
                                | gptkbp:bfsLayer | 5 
 | 
                        
                            
                                | https://www.w3.org/2000/01/rdf-schema#label | Fort Gorges 
 |