Introd castle stands on a promontory protected by the harsh gorges of the Savara and the Dora di Rhêmes (in fact the name Introd derives from the term Interaquas, or entre-eaux in French, which means “between the waters”) and probably dates back to the 12th century.
Like Graines castle, originally, it probably consisted of a square keep surrounded by a perimeter wall. Around 1260 Pierre Sarriod of Introd transformed the early castle which, following the modifications of the 15th century became five-sided and almost circular in shape, setting it apart from other castles in Val d’Aosta. These transformations mark the apogee of the Sarriod family, which included the Lords of Introd and La Tour (Saint-Pierre).
The castle was heavily damaged by two fires during the second half of the 19th century and was rebuilt at the start of the 1900s by Gonella, who engaged the architect Chevalley. Today it is owned by the Counts Caracciolo of Brienza and rented out for free to the Municipality of Introd. The ground floor and castle gardens are open to the public.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.