The Islands of Ireland: Castle’s fall from Grace

The difficulties in building a castle on the mainland are considerable. The logistical problems of sourcing stone, cutting it, and having enough skilled labour to put it all together can only be imagined. An incredible achievement whether in the 10th century or the 19th.
But on an island? Where huge slabs have to be brought by boat? An effort of construction where materials, equipment, and workers have to be brought daily, if no accommodation were available, must be marvelled at.