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Castle in United Kingdom

List of castle in United Kingdom (found 49 locations). Category description: A large fortified building or set of buildings

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Oakham Castle (England)
Oakley Arms (Wales)
Oakmere Harthhill Bank (England)
Oaksey (England)
Oare Common (England)
Ockley (England)
Odell Castle (England)
Odiham Castle (England)
Offton Castle (England)
Ogbourne St Andrew (England)
Ogle Castle (England)
Ogmore Castle (Wales)
Okehampton Castle (England)
Old Beaupre Castle (Wales)
Old Buckenham Castle (England)
Old Callaly Castle Hill (England)
Old Castle Twt (England)
Old Castle of Dene (England)
Old Castle upon Alun (Wales)
Old Castleton (England)
Old Erringham Ringwork (England)
Old Hall Camp (Wales)
Old Hunstanton Old Church Mound (England)
Old Radnor Castle (Wales)
Old Sarum Castle (England)
Old Wardour Castle (England)
Oldbury Camp (England)
Oldcastle (Wales)
Oldcastle Castle Hill (England)
Olivers Mount (England)
Orcop Castle (England)
Orford Castle (England)
Ormside Ringwork (England)
Orsett (England)
Orwell (England)
Oswestry Castle (England)
Otford Castle (England)
Otley The Mount (England)
Over Stowey Mound (England)
Overbury Farm (England)
Overhall Grove (England)
Oversley Castle (England)
Owain Glyndwrs Mount (Wales)
Owls (England)
Oxford Castle (England)
Oxted Barrow Green (England)
Oxton Moorfield Mount (England)
Oxwich Castle (Wales)
Oystermouth Castle (Wales)