West Central trail/Llwybr Canolog Y Gorllewin
Castle Du/Sennybridge Castle
This is a thirteenth century Welsh castle. Little now remains but the ruins of a wall and round tower. It is sited on private land northwest of Brecon at Sennybridge on the A40 towards Llandovery.
Trecastle Mountain/Y Pigwyn
This site has two circles made up of small stones. In the centre of the larger circle, which still has over twenty stones standing, is a small mound. There are two outlying stones. To the southwest of the larger circle the smaller one is made up of five surviving larger stones. The site is close to the remains of two Roman forts and is located off the A40 between Brecon and Llandovery and via a lane just past Trecastle towards Cwmwysg and close to the Roman Road.
Llandovery Castle/Castell Llanymddfri
This castle is in the town of Llandovery and was built at the beginning of the twelfth century. It was the scene of a number of battles and changed hands between the Welsh and English a number of times. There remains the ruin of a tower on the hill of a motte. The town is on the A40 north east of Llandeilo.
Nant Tarw
There are two circles, a larger and smaller one, and both are made up of about eighteen remaining small stones. There are a number of larger fallen stones near the circles, plus a separate group of stones near the largest circle. The site is located off the A40 at Trecastle between Brecon and Llandovery. The road leads to the Usk Reservoir and forestry plantation.
Llangadog Castle/Castell Llangadog/Castell Meurig
A motte and bailey earthwork dating back to the twelfth century the site can be seen from a footpath and the road. It is situated at Llangadog on the A4069 southwest of Llandovery toward Llandeilo.
Garn
This is a Bronze Age hillfort giving commanding views over the Towy valley. The site is situated on a road off the A4069 between Llandeilo and Llagadog.
Carreg Cennen Castle/Castell Carreg Cennen
A Welsh castle of the twelfth century later taken by the English. It is sited high in a good defensive position. Portions of the curtain wall and a number of towers remain with internal buildings still visible. There is also a walled passage that leads to a natural limestone cave beneath the castle. The site is in Trapp to the south east of Llandeilo.
Dinefwr Castle/Castell Dinefwr
On the site of previous castles the present structure is thirteenth century. A round tower within the curtain wall and another in the inner ward remain, some of the buildings have been partially restored. The location is about one mile west of Llandeilo with views over the Tywi valley. The castle can be reached by footpath through the park of Newton Mansion known as Dinefwr Park and is about a mile south west of Llandeilo.
Dryslwyn Castle/Castell y Dryslwyn
These are the remains of a castle built by the Welsh around the mid thirteenth century and heavily attacked by the English who eventually took the castle after a long siege. Remains of a hall and keep walls can be seen and the site is about five miles west of Llandeilo on the B4297 off the A40.