| name | image | style | date demolished | type | use | administrative division | continent | date completed | date Start construction | Website | Height (m) | city | Country | latitude (°) | longitude (°) | Original_owner/Owner/Protection | Map |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Alnwick Castle |  | England | Europe | 1096 | 11st century | website | Alnwick/Haldimand | United Kingdom | 55.4157830000 | -1.7060780000 | Map | ||||||
| Antony House |  | England | Europe | 1711 - 1721 | website | Antony, Cornwall | United Kingdom | 50.3704000000 | -4.2526800000 | Map | |||||||
| Appleby Castle |  | England | Europe | 1120 | 12nd century | website | Appleby-in-Westmorland | United Kingdom | 54.5742000000 | -2.4887800000 | English Heritage, Lady Anne Clifford, Ranulf de Gernon, Ranulf le Meschin | Map | |||||
| Apsley House |  | England | Europe | 1778 | 1771 | website | London | United Kingdom | 51.5034000000 | -0.1517000000 | Robert Adam | Map | |||||
| Arundel Castle |  | England | Europe | 11st century | website | Arundel | United Kingdom | 50.8561111111 | -0.5536111111 | Roger de Montgomerie, 1st Earl of Shrewsbury | Map |