Caergwrle Castle is located in the town of Caergwrle, in Flintshire, Wales. Believed to have been preceded by a hill fort, it was constructed in 1277 by Dafydd ap Gruffydd under the reward of King Edward I. The castle had notable features such as D-shaped towers and a circular keep. It was partially destroyed during Dafydd's revolt in 1282 but was restored by Reginald de Grey. Edward gifted the castle to his wife Eleanor of Castile but it suffered damage in a fire. Subsequent repairs were not made, and the castle fell into ruin. Caergwrle Bowl, an archaeological find from the Bronze Age, was discovered in the vicinity in 1823. Excavations were conducted in the late 20th century, and the castle ruins are now maintained by Caergwrle Community Council. The site is listed as a Grade I structure.
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.