On the west shore of Loch Riosaigh, Breaclete Mill lies on the outlet of Loch nan Geadraisen half a mile from the road at Breaclete.

Breaclete Mill is an extremely good example of a Norse Mill. Today in Lewis there are upwards of some two hundred sites of these small corn mills. They provided communities over the centuries with a source of efficient water power, operated by any small stream. Material for their construction was gathered from the surrounding moor - i.e. stone, peat and clay for the walls. Driftwood was used for the roof and any bog wood found whilst cutting peats. Only three pieces of metal are required for the working mechanism; the drive bar which fits in to the top mill stone, the bar which connects with the drive bar and is morticed in to the timber barrel giving the drive for the mill, and lastly the bearing allows the barrel to spin on its seat.

The present site had been used for centuries. Earlier mill dams can be seen at the loch above the mill when the water level is low. Parts of earlier mill-stones found at this site are now lying to the left of the mill door.