Please click here for more information. Dolbadarn Castle Llanberis, Llanberis, Caernarfon, Carmarthenshire Probably built by Llywelyn ab Iorwerth ('the Great') early in the 13th century, the castle is dominated by a massive round-towered keep, still standing up to 50 feet high   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: ?m SE of Llanberis, on A4086     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.     Dolbadarn Castle Llanberis, Caernarfon, 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.