Felin Aberarth

Felin Aberarth is a two-storey building constructed from rubble stone and topped with a slate roof. The roof was raised and extended over a parallel saw-mill in 1902. The west gable end displays three construction phases, featuring a date stone from 1819 on the left cornerstone, a reset date stone from 1864 below a brick-headed loft window that is approximately at the original gable level, and a 1902 plaque under the current gable. The roof extends down over the timber-clad front of the saw-mill to the rubble-stone south wall.

The mill features an overshot mill-wheel with an iron rim and hub, an oak shaft and spokes, and timber buckets, likely dating from 1865. A timber trough for water is made from two halves of a ship's mast found on the beach. The former saw-mill to the right has 20th-century boarding, a ground floor door, a first floor window, and a loft window. The south side has three windows on the second storey, each with 12 panes and 1902 brick heads, along with a door to the ground floor in the third bay. The northeast corner is curved.

The east end has a reset slate plaque in the gable that reads, "This mill erected by J. Brooks Esq 1819," along with a window below that has a brick head and a broad opening on the ground floor with a timber lintel. The saw-mill addition features 20th-century boarding and windows on each floor.

The building was re-roofed when it was widened in 1902, but the original back wall remains intact to the first floor level. The first floor beams and boards may date from either 1819 or 1864. The machinery from 1864 includes a Hurst that may date back to 1819, an iron pit-wheel with wooden teeth, a wooden spur wheel, and line-shafting leading to two grinding stones, one French and one from Anglesey. The French stone is possibly a unique example, featuring two ventilation slots to cool the grinding faces. The saw-mill machinery has been removed.