An archaic architecture
Situated on the north-east corner of the inner ward, the keep is a rectangular tower of about twenty metres high, with walls about two metres thick. Four floors, three of which were vaulted, were accessed by a granite spiral staircase. In the 16th century, Rolland de Gourfaleur had openings created on the west and south flanks. The openings led to a balcony supported by a pair of large double corbels, still visible on the two sides.
![Le Donjon De Regnéville © Collection Du Musée Maritime Cliché A. Poirier Cd50](https://www.tourisme-coutances.fr/app/uploads/coutances/2021/11/thumbs/le-donjon-de-regneville-collection-du-musee-maritime-cliche-a-poirier-cd50-640x1024.jpg)