Harbour walls, breakwater and locks at Burry Port

The harbour walls, breakwater, and locks at Burry Port consist of eastern and western docks that lead to an outer harbour, which is protected by breakwaters. The construction primarily features battered rubble stone with render, with earlier vertical masonry behind and above. The eastern breakwater curves sharply inward toward the harbour mouth, and along its outer eastern side, there is a line of iron tub boats, which is a Scheduled Ancient Monument. The long western breakwater has thin stone slabs placed on edge to create a windbreak and includes a harbour light.

New walls have been constructed between the breakwaters to form a harbour entrance. The outer harbour features a landing stage on the western side. The western dock has a lock at its entrance made of coursed freestone, including a rebate for the lock gate and slots for stop gates, and it is spanned by a modern footbridge. The dock is partly defined by rubble-stone walls on the northern and eastern sides, while the rest consists mainly of a bank made of crushed copper slag. The eastern dock also has a similar lock at its entrance. The northern and part of the eastern dock wall are made of rock-faced stone, while the remainder is battered rubble stone, with a concrete stormwater outfall apron to the northeast.