The Mound of Down is an ancient monument which gives County Down its name. Originally the home of Celtair - Rath Celtair - this became a stronghold for the Dál Fiatach, a powerful army who once owned the Isle of Man. It is a good example of an Iron Age defensive earthwork in the middle of which a Norman Motte and Bailey was built by John de Courcy after his defeat of Rory Mac Donlevy in 1177.
Originally on the shores of Strangford Lough this site was an excellent military base. The land around has been reclaimed since the 1700s. Today the site is an impressive motte and bailey style fort which was abandoned before completion.
From the top of the incomplete mound you have an excellent view over Down Cathedral and Inch Abbey. In the distance are the Mourne Mountains. During the summer the site is left to grow as a wildlflower meadow.
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.