Garz Slavic fort was an ancient burgwall. The earthworks have an oval shape, are about 200 metres long and 140 metres wide. There is an entrance roughly in the middle of the western side. Towards the lake of Garzer See to the south the ramparts are lower.
The castle was mentioned in 1165 as Borgar Gardz, when there were small-scale skirmishes with Danish warriors in front of the castle. The castle itself does not appear to have come under attack, but gradually fell into ruins afterwards. In 1300, the Prince of Rügen, Vitslav III, built a new castle and a chapel inside the original fort. After his death in 1325, the castle finally fell into disrepair. On the ramparts is now a war memorial to those who fell in the First World War and, in its immediate vicinity, is the Ernst Moritz Arndt Museum, where one can learn more about the history of the place.
The Garz fort is now a protected archaeological site. It ranks, in terms of size and degree of preservation, as one of the most important Slavic strongholds.
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.