Ballymote Castle is a large rectangular keepless castle, built around 1300. It is located in the townland of Carrownanty on the outskirts of Ballymote. It is the last of the Norman castles in Connacht. It was probably built in order to protect the newly won possessions of Richard Óg de Burgh, 2nd Earl of Ulster (also known as the Red Earl), in County Sligo, some distance from an earlier motte.
Ballymote castle is a large enclosure castle, the most symmetrical of all the Irish 'keepless' castles. It has many similarities with Beaumaris Castle, in Anglesey, Wales, built by King Edward I of England. The entrance, with a double towered gate, is in the north wall and had twin D-shaped towers. It has a gatehouse typical of the period, the outer portions of which have almost completely disappeared. The castle, however, remains an impressive structure. The interior measures about 30 square metres. There are three-quarter round towers at all four corners and also in the middle of the east and west walls. A postern gate, which was planned for the centre of the south wall, was never completed, probably because of the events of 1317, when the castle was lost to the O'Connors. A small square tower had protected this gate.
References:The Broch of Clickimin is a large and well preserved, though somewhat restored broch near Lerwick. Originally built on an island in Clickimin Loch (now increased in size by silting and drainage), it was approached by a stone causeway. The water-level in the loch was reduced in 1874, leaving the broch high and dry. The broch is situated within a walled enclosure and, unusually for brochs, features a large 'blockhouse' between the opening in the enclosure and the broch itself. Another unusual feature is a stone slab featuring sculptured footprints, located in the causeway which approached the site. Situated across the loch is the Clickimin Leisure Centre.