The Château de Coucy is a French castle in the commune of Coucy-le-Château-Auffrique, in Picardy, built in the 13th century and renovated by Eugène Viollet-le-Duc in the 19th century.
During its heyday, it was famous for the size of its central tower and the pride of its lords, who adopted the staunchly independent rhyme: roi ne suis, ne prince ne duc ne comte aussi; Je suis le sire de Coucy.
The castle was constructed in the 1220s by Enguerrand III, Lord of Coucy. The castle proper occupies the tip of a bluff or falaise. It forms an irregular trapezoid of 92 x 35 x 50 x 80 m.
Wikipedia https://en.wikipedia.org/wiki/Château_de_Coucy
Address Le Chateau, 02380, France
Coordinates 49°31'18.598" N 3°19'6.783" E