Castle 
Fort 
Tower 
Other
Castles in Ireland
- Aghadown House
- Aghamarta Castle
- Ardintenant Castle
- Ardmore Round Tower
- Ardmore Signal Tower
- Ardtully House
- Ballincollig Castle
- Ballinoroher Castle
- Ballinskelligs Castle
- Ballintotis Castle
- Ballinvard Castle
- Ballyannan Castle
- Ballybeg Castle
- Ballycarbery Castle
- Ballyduff Barracks
- Ballyhack Castle
- Ballyhooly Castle
- Ballymacphilip Castle
- Ballymacshanroe Castle
- Ballynacarriga Castle
- Barryscourt Castle
- Beamish Mausoleum
- Belleek Fort
- Belvelly Castle
- Belvelly Martello Tower
- Black Ball Head Signal Tower
- Blackrock Castle
- Blackwater Castle
- Blarney Castle
- Brow Head Signal Tower
- Bryan's Fort
- Bulgaden Eady Castle
- Buttevant Castle
- Cahergall Stone Fort
- Cahermone Castle
- Cahir Castle
- Cappanacush Castle
- Carlingford Castle
- Carrigadrohid Castle
- Carrigaline Castle
- Carriganass Castle
- Carrigaphooca Castle
- Carrigeen Castle
- Carrignacurra Castle
- Carrigrenan Tower
- Castle Barrett
- Castle Bernard
- Castle Donovan
- Castle Freke
- Castle Magner
- Castle Roche
- Castle Warren
- Castlelough Castle
- Castlelyons Castle
- Castlemartyr Castle
- Castlemore Castle
- Charles Fort
- Clodah Castle
- Cloncoskoran Castle
- Clonmeen Castle
- Cloyne Round Tower
- Conna Castle
- Coppinger's Court
- Coppingerstown Castle
- Crowley Castle
- Cullen Castle
- Derryleamleary Castle
- Desmond Castle
- Donegal Castle
- Downdaniel Castle
- Downeen Castle
- Dromagh Castle
- Dromiscane Castle
- Dunalong Castle
- Dunasead Castle
- Dunboy Castle
- Duncannon Fort
- Dundanion Castle
- Dundeady Castle
- Dungarvan Castle
- Dunhill Castle
- Dunlough Castle
- Dunmanus Castle
- Dunmore Castle
- Dunworley Castle
- Elizabeth Fort
- Fota Tower
- Garinish Island Martello Tower
- Garryvoe Castle
- Glanworth Castle
- Ightermurragh Castle
- James Fort
- Kanturk Castle
- Kedge Point Signal Tower
- Kilbrittain Castle
- Kilcascan Castle
- Kilcloggan Castle
- Kilcoe Castle
- Kilcrea Castle
- Kilgobbin Castle
- Killaha Castle
- Kilmeedy Castle
- Knockadoon Signal Tower
- Knockdrum Stone Fort
- Knockmaun Castle
- Leacanabuaile Stone Fort
- Leitrim Castle
- Liscarroll Castle
- Lisfinny Castle
- Lismore Castle
- Lissycrimeen Castle
- Lohort Castle
- Lombard's Castle
- Loughlohery Castle
- Macroom Castle
- Mallow Castle
- Manning Castle
- Mashanaglass Castle
- McKenna's Castle
- Monkstown Castle
- Monteen Castle
- Mountlong Castle
- Nicholastown Castle
- Norrisland Castle
- The Old Barracks
- Old Head Castle
- Old Head Signal Tower
- Oldcourt Castle
- Parkavonear Castle
- Passage East Fort
- Poulnalong Castle
- Puxley Mansion
- Raheen Castle
- Reginald's Tower
- Rincolisky Castle
- Ringaskiddy Martello Tower
- Ringrone Castle
- Robert's Head Signal Tower
- Ross Castle
- Rossbrin Castle
- Seven Heads Signal Tower
- Shanagarry Castle
- Sheanmore Castle
- Siddons Tower
- Sive Stone Fort
- Slade Castle
- Staigue Stone Fort
- Strancally Tower
- Swift's Tower
- Taaffe's Castle
- Templemichael Castle
- Toe Head Signal Tower
- Togher Castle
- Tourin Castle
- Tynte's Castle
- Wallingstown Castle
- White Castle
- Wynn's Castle