Segorbe Castle was an Arabian alcázar (palace or castle). Very little remains of the original alcázar, but the large complex was a residence of lords, dukes and kings for over a millennium.
.After the Muslim king of Valencia, Zayd Abu Zayd, converted to Christianity and declared himself an ally and vassal of King James I of Aragon, he ceded the fortress to James in 1229 and became governor general of Valencia on his behalf. The castle became a sanctuary for Zayd Abu Zayd himself when he was killed by Dynamil Zayyan until James captured the castle in 1245, and placed Abu Zayd in command of an army to assist in the retaking of Valencia.
The castle had a peak in the 14th and 15th centuries, culminating in the holding of General Courts by King Martin of Aragon, who had made the city his residence.
In 1784, urban expansion of Segorbe beyond the original medieval fortifications required further construction, and new walls were built. After the works were completed, the new walls had eight gates.
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.