The Palais Ducal de Nevers is a masterwork of 15th and 16th-century Renaissance architecture that once served as the residence of the counts and dukes of Nevers. Positioned prominently on a hilltop overlooking the old town center and Republic Square, the palace showcases an impressive wide Renaissance façade framed by polygonal turrets, octagonal towers, and ornate bas-reliefs depicting the legend of Saint Hubert and the Knight with the Swan. Designated as a French monument historique since 1840, the palace now houses the town hall, tourist office exhibition halls, and a permanent exhibition on the city's history. During restoration excavations in 1988, unique pieces of 14th-century artillery were discovered, positioning the château as an important repository of medieval arms technology.