The imposing Château de Margon consists of a rectangular building flanked with three towers. It dates from the early 13th century and was attached to the Kingdom of France in 1221. Le Moine de Margon family has owned the castle since 1719. Two side wings were added inside the courtyard of the 16th century.
Château de Margon has also remarkable gardens.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.