Dryslwyn Castle is a native Welsh castle built around the 1220s on a rocky hill overlooking the Towy Valley between Llandeilo and Carmarthen. The fortress was likely built by Rhys Grug, son of Lord Rhys, and featured a large round tower with a walled courtyard containing a great hall. Late thirteenth-century expansions added an impressive suite of apartments and a magnificent chapel tower. The castle endured siege by Edward I's army of 11,000 men in 1287 and later saw action during Glyndŵr's rebellion before being deliberately slighted by Henry IV in 1409. Now cared for by Cadw, the historic environment service of the Welsh Government, the castle showcases medieval Welsh military architecture and defensive strategies.
