Monschau Castle is first recorded in 1217 as castrum in Munjoje by Archbishop Engelbert I of Cologne. It was expanded in the middle of the 14th century into a fortress for the counts of Jülich and equipped with mighty ring walls and wall walks. In 1543 troops of Emperor Charles V besieged the site with heavy guns, captured it and plundered it together with the town of Monschau.
In the early 19th century the French administration declared the castle to be state property and sold it to a private buyer who had the roofs removed in 1836 and 1837 in order to avoid building tax. As a result, the castle fell into ruins until, in the early 20th century, the government of the Rhine province secured and repaired it. After the First World War a youth hostel was opened in the west wing. So Monschau Castle survived as a 'youth castle' (Jugendburg).
Within sight of the castle, on the other side of town, is another fortification, the Haller. It is disputed as to whether it was an outpost of the castle, a detached watchtower or the remains of an older castle site.
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.