Gernsbach is a town in the district of Rastatt, in Baden-Württemberg, Germany. It is located on the river Murg, 7 km (4.35 mi) east of Baden-Baden in the Black Forest. Twin towns are Baccarat in France and Pergola, Marche in Italy.The town is the historic centre of the lower Murg Valley and forms a central place of mid-size with Gaggenau.