Category: fortification
- Bongam Mountain Fortress
- Weoley Castle
- Fort Clinton (site)
- Groby Castle (earthwork)
- Groby Old Hall
- Rockingham Castle
- Titchmarsh Castle (earthwork)
- Thorpe Waterville Castle
- Wadenhoe Castle (earthwork)
- Brougham Hall
- The Old Baile
- Pilsbury Castle
- Black Middens Bastle House
- Shilla Hill Bastle House
- Bog Head Bastle
- Dally Castle (earthwork)
- Whiteley Shield Bastle
- Staward Pele
- High Lovelady Shield Bastle House
- Annesley Castle (earthwork)
- Egmanton Castle (earthwork)
- Clarghyll Hall Bastle House
- White Lea Bastle House
- Underbank Bastle House
- Saint Clears Castle (earthwork)
- Cresswell Castle (ruins of)
- Denbigh Castle
- Prestatyn Castle (remains)
- Holt Castle
- Shocklach Castle (earthwork)
- Shocklach Motte (earthwork)
- Malpas Castle (earthwork)
- New Castle Castle (earthwork)
- Skenfrith Castle
- Monnow Bridge Tower
- Глухая башня
- Fort C.F. Smith 1866-1868
- Fortress of Kougi
- Site of Horogoru Castle
- Pen Dinas
- Castell Odo
- Carn Fadryn
- Kinver Edge and Holy Austin Rock Houses
- Tre'r Ceiri
- Old Winchester Hill
- Pen y Gaer
- Castell Aberlleiniog
- Montgomery Castle
- Hen Domen Castle
- Fort Mackinac