The Castle can be visited
Llandovery Castle

Llandovery Castle is a castle ruin in the town of Llandovery in Carmarthenshire, Wales. It occupies a hilltop overlooking the River Towy and the land surrounding it.
The Normans began construction of the castle in 1116, and shortly thereafter stopped. It was attacked and partially destroyed by Welsh forces under Gruffydd ap Rhys. The castle remained in Norman hands until 1158, when Rhys ap Gruffydd, youngest son of Gruffydd ap Rhys, seized the castle from its owner. The castle changed hands over the next several years, finally falling to the English under Edward I in 1277.
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Location: 51.9927, -3.7964