Llawhaden Castle was originally a 12th Century earth and timber ringwork fortress, which was destroyed by the Welsh in 1193. The bishops of St Davids founded the stone keep and courtyard castle which can be seen today. They added a curtain wall, flanked by round towers and a large circular keep. Around the courtyard stand the remains of two imposing suites of lodgings and flanking the wide ditch are two octagonal and two square towers. Protecting the entrance and standing to its full height, is the impressive facade of the three storey twin-towered gatehouse. Well worth a visit.