Estepa castle was known in the Islamic period as Hisn Istabba, and was taken by Spanish king Fernando III on 15 August 1241.
The city walls that still surround the old town on the San Cristóbal hill were first built in the tenth century by the Moors, renovated by Almohad invaders in the twelfth, and again reconstructed when Estepa fell to the Christian Order of Santiago in the thirteenth century. The keep inside the walls was built against attacks from Granada in the fourteenth century, and at 26 metres offers sweeping views of the town and surrounding countryside.
A defensive tower built by Lorenzo Suárez de Figueroa, Master of Santiago, it carried out defensive and logistical functions, measuring 26 metres high by 13 metres wide. On clear days, you can see Sierra Nevada from the roof.
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.