According to legend, Valperga Castle was founded during the second half of the 10th century by Dadone, father of King Arduino. The hamlet's fortresses, which date back to the 14th century - a period of major conflict between the Valperga family and the San Martino family, were renovated in the 16th century. But the structure of the fortress changed during the 17th century when the people, brought to their knees from conflict and dying of hunger, took possession of the walls and turned the ditches into fields for farming. It was Cristina di Francia, the unbendable Madama Reale, who put a stop to that and ordered that the walls be cleaned. The original shelter, partially preserved, has the residential rooms which were once used to stockpile food. When, during the second half of the 18th century, the Baron Carlo Giuseppe Coardi di Carpeneto became the owner of the fortress, he had a new wing built next to the original structure. This building, remodeled beginning in 1807, has, overtime, taken on the look of a Neo-Classical villa and is today, a retirement home for the elderly.
A tower with a rectangular layout that forms the entrance and the circular towers in the central body are what remain of the oldest part of the castle.
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.