Carmarthen Castle was once the seat of royal power in southern Wales. An earth and timber castle once stood on the site, built in 1109, but only the motte beneath the keep survives of this original structure. In 1181, rebuilding in stone began and the castle was fully converted to stone by 1233. The castle gatehouse in its present form dates from the 15th century. Parts of the castle were once used as a gaol. Visible remains are the gatehouse, the keep, a length of curtain wall and 2 towers.
