Please click here for more information. Dinefwr Castle Dinefwr, Llandeilo, Carmarthenshire Substantial remains of a native Welsh castle and the principal stronghold of the princes of Deheubarth, held by Lord Rhys in the 12th century. Later taken by King Edward I and retained as a royal stronghold.   Accommodation and Events There's a good choice of quality assured accommodation and often events in the area covered by the map below. About our location: 1m W of Llandeilo, off A40     Reset Map Position Admission Special offer Adult price Free Child price Free Family price Free Concessions Free Opening Hours: Access is available at all reasonable times. This will normally be between 10:00 and 16:00 daily.     Dinefwr Castle Dinefwr, Llandeilo, Carmarthenshire  Telephone 029 2082 6185 Website	Accommodation Beaches Events Restaurants Click on the channels above to get information on areas covered by the zoomable maps.