The construction of the Fort Regent fortress we see today began on 7 November 1806, during the Napoleonic Wars, with the laying of a foundation stone by George Don the Lieutenant Governor of Jersey. The fort was built using local workers and men from the Royal Engineers, with an average of 800 men working at any given time. This enabled the substantial amount of work to be completed 8 years later, in 1814. It was given the name Fort Regent in honour of Prince Regent, who was King of the United Kingdom of Great Britain and Ireland at this time. The design of the fort is credited to Lieutenant-General John Humfrey, and it is thought that Lieutenant-Colonel John Evelegh would have also worked on the final plans. The fort's main features are substantial curtain walls, ditches, a glacis, redoubts, bastions, and redans (or demi-bastions). There was a parade ground in the centre, which is now built upon, and covered with a roof.
During the Occupation of the Channel Islands the German forces made some additions to the fort including flak cannons. Some of these concrete structures remain today. In December 1967 the States of Jersey made a decision to adapt the site into a leisure centre.References:
The Château Comtal (Count’s Castle) is a medieval castle within the Cité of Carcassonne, the largest city in Europe with its city walls still intact. The Château Comtal has a strong claim to be called a 'Cathar Castle'. When the Catholic Crusader army arrived in 1209 they first attacked Raymond-Roger Trencavel's castrum at Bèziers and then moved on to his main stronghold at Carcassonne.
The castle with rectangular shape is separated from the city by a deep ditch and defended by two barbicans. There are six towers curtain walls.
The castle was restored in 1853 by the architect Eugène Viollet-le-Duc. It was added to the UNESCO list of World Heritage Sites in 1997.