See: List of castles, Castles in England, Castles in Scotland, Castles in Northern Ireland
Anglesey
Clwyd
Dyfed
Glamorgan
Gwent
Gwynedd
Powys
South Glamorgan
West Glamorgan
... the town has a total area of 23.8 km² (9.2 mi²). 23.5 km² (9.1 mi²) of it is land and 0.3 km² (0.1 mi²) of it is water. The total area ...