Llwyngwair Mill

Llwyngwair Mill is an early to mid 19th century water mill, constructed from large rubble stone and topped with a corrugated iron half-hipped roof. The building is two storeys high with a loft. The west end wall features a centrally located ground floor door with a cambered brick head and keystone, which is partially blocked for rubble stone steps leading to an off-centre first floor door that has a damaged brick head. The upper door was once part of a gabled porch, which is now roofless. There is also a loft light with a cambered brick head and keystone, and a brick band at sill level.

On the south side, there are three small first floor windows, each with cambered heads. The north side includes an attached gabled and lofted building with a grouted slate roof to the right, a centre door, a small window to the left, and a larger first floor window above, all featuring cambered brick heads and keystones.

The east end wall showcases a large iron and timber overshot water wheel, marked with 'Moss and Sons 1843 Carmarthen' on the rim. There is a small first floor door and a loft window above, both with cambered brick heads. A leat from the Afon Clydach flows in from the south.

Inside, the loft floor has an 8-bay roof with double purlins and originally four widely spaced trusses, with three additional intermediate trusses added later.