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:
The Schloßberg is the site of ancient fortress in the centre of the city of Graz, Austria. The hill is now a public park and enjoys extensive views of the city. The fortification of the Schloßberg goes back to at least the 10th century. In the mid-16th century, a 400 m long fortress was constructed by architects from the north of Italy. There are records of a cable-hauled lift being in use between 1528 and 1595 to move construction materials for the fortifications. The castle was never conquered, but it was largely demolished by Napoleonic forces under the Treaty of Schönbrunn of 1809. The clock tower (the Uhrturm) and bell tower (the Glockenturm) were spared after the people of Graz paid a ransom for their preservation.
The remains of the castle were turned into a public park by Ludwig von Welden in 1839. The park contains the Uhrturm, the Glockenturm, a cistern and two bastions from the old castle. The Uhrturm is a recognisable icon for the city, and is unusual in that the clock"s hands have opposite roles to the common notion, with the larger one marking hours while the smaller is for minutes. The Glockenturm contains Liesl, the heaviest bell in Graz.
Near the Uhrturm there is a café with views over the old town. Additionally, on the western side of the Schloßberg, there are two small cafés, one with table service and the other one with self-service. Next to the terminus of the funicular railway there is a hilltop restaurant with views of western Graz. In what was once the cellar of one of the ruined bastions is the Kasemattenbühne, an open-air stage for concerts and performances.
Below the Schloßberg hill is an extensive system of tunnels, which were created during the second world war to protect the civilian population of Graz from aerial bombing. Some of these tunnels are still accessible, including a passage from Schloßbergplatz to Karmeliterplatz, and a grotto railway for children. Also in the tunnel complex is the Dom im Berg, which was expanded in 2000 to provide a venue space for up to 600 people.