In 1383, the Davensberg branch of the noble lords of Büren acquired a newly constructed castle from Archbishop Friedrich of Cologne as a fief. It was intended as an outpost in the Almetal and was to be jointly owned by the Davensberg and Cologne Archbishop.
In 1394, the Davensbergs pawned the castle to Johann von Scharfenberg, a branch of the Padberg family. Concurrently, the noble lords of Büren pawned their half of the castle and town of Alme to Hermann von Padberg. The redemption of the Ringelstein castle took place in 1399 by Berthold von Büren.
While often suggested to defend against the Padbergs, there is no evidence linking the pawning and redemption of Ringelstein and Alme castles for this purpose.
In 1458, the castle was granted as a fief to the Landgrave of Hesse. During the Thirty Years' War, Ringelstein became a venue for witch trials, with a judicial site and torture facilities. In 1631, 55 people were convicted and executed as witches within 30 days. After 1802, Ringelstein declined in significance and fell into ruin.
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.