Within then independent Brittany, Château de Clisson, situated at a crossroads for Anjou and Poitou, was one of the great fortified places on the frontiers of the Duchy of Brittany. The first Lords of Clisson occupied the site from the 11th century. They are mentioned for the first time in 1040. Clisson was then the seat of a powerful châtellenie covering 23 parishes.
Most of the present castle was built in the 13th century. Constructed by Guillaume de Clisson, on a rocky outcrop dominating the Sèvre Nantaise, its form at that time was an irregular polygon flanked by round towers and isolated from the rocky plateau by a shallow moat. In the 14th century, Olivier III de Clisson incorporated the gatehouse into a massive quadrilangular keep. The two semicircular towers of the gatehouse collapsed in the 17th century. The castle became the setting for the turbulent lives of Olivier IV de Clisson and Olivier V de Clisson, named Constable of France in succession to Du Guesclin in 1380.
In the 15th century, the fortifications were modernised to permit the use of artillery. In the second half of the century, the former entrance was modified and the curtain wall was extended and completed by a barbican. At the same time, the castle was enlarged to the west with a new rectangular enclosure nearly 100 m long, armed with towers with artillery casemates. After 1420, the castle became the property of the Duke of Brittany. It was one of the favourite residences of Duke Francis II who was remarried there, to Marguerite de Foix in 1474. He built a second rectangular enceinte flanked by artillery towers.
Around 1590, the troubled period of the French Wars of Religion necessitated the construction of three terraced bastions on the south. Thus, three lines of defence in depth protected the site. Until the 17th century, the castle was the residence of the Avaugour family, descendants of François Ier d'Avaugour, illegitimate son of François II. He modified and transformed the castle to suit the tastes and fashions of the day.
During the War in the Vendée (1793-1796), the town and its castle were burned by the Infernal columns of Jean-Baptiste Kléber. In 1807, the estate was bought by the sculptor François-Frédéric Lemot with the goal of conservation. During the 19th century, the ruined castle attracted Romantic painters and sculptors. In 1962, the castle was sold by the Lamot family to the Conseil général of the Loire-Atlantique, who carried out important restoration works with the assistance of the French Ministry of Culture.References:
Monte d"Accoddi is a Neolithic archaeological site in northern Sardinia, located in the territory of Sassari. The site consists of a massive raised stone platform thought to have been an altar. It was constructed by the Ozieri culture or earlier, with the oldest parts dated to around 4,000–3,650 BC.
The site was discovered in 1954 in a field owned by the Segni family. No chambers or entrances to the mound have been found, leading to the presumption it was an altar, a temple or a step pyramid. It may have also served an observational function, as its square plan is coordinated with the cardinal points of the compass.
The initial Ozieri structure was abandoned or destroyed around 3000 BC, with traces of fire found in the archeological evidence. Around 2800 BC the remains of the original structure were completely covered with a layered mixture of earth and stone, and large blocks of limestone were then applied to establish a second platform, truncated by a step pyramid (36 m × 29 m, about 10 m in height), accessible by means of a second ramp, 42 m long, built over the older one. This second temple resembles contemporary Mesopotamian ziggurats, and is attributed to the Abealzu-Filigosa culture.
Archeological excavations from the chalcolithic Abealzu-Filigosa layers indicate the Monte d"Accoddi was used for animal sacrifice, with the remains of sheep, cattle, and swine recovered in near equal proportions. It is among the earliest known sacrificial sites in Western Europe.
The site appears to have been abandoned again around 1800 BC, at the onset of the Nuragic age.
The monument was partially reconstructed during the 1980s. It is open to the public and accessible by the old route of SS131 highway, near the hamlet of Ottava. It is 14,9 km from Sassari and 45 km from Alghero. There is no public transportation to the site. The opening times vary throughout the year.