Miranda del Castañar Castle, or at least the tower of homage, was probably built by Pedro de Zúñiga. By means of a small enclosure that serves as a gate, the tower is attached to another D-shaped tower and other remains that might belong to a previous fortress. The round loopholes are the usual 15th-century artillery loopholes.
Miranda was founded around 1215.The well preserved wall probably dates from that time. Prior to the death of Diego de Zúñiga, the fortress is taken by García Alvarez de Toledo, the Duke of Alba, who claimed to be entitled to have it.
References:The Broch of Gurness is an Iron Age broch village. Settlement here began sometime between 500 and 200 BC. At the centre of the settlement is a stone tower or broch, which once probably reached a height of around 10 metres. Its interior is divided into sections by upright slabs. The tower features two skins of drystone walls, with stone-floored galleries in between. These are accessed by steps. Stone ledges suggest that there was once an upper storey with a timber floor. The roof would have been thatched, surrounded by a wall walk linked by stairs to the ground floor. The broch features two hearths and a subterranean stone cistern with steps leading down into it. It is thought to have some religious significance, relating to an Iron Age cult of the underground.
The remains of the central tower are up to 3.6 metres high, and the stone walls are up to 4.1 metres thick.