 Thallichtenberg and the castle belonged at the time of French annexation beginning in 1801 to the "Mairie" (“Mayoralty”) of Burglichtenberg, the Department of Sarre, the Arrondissement of Birkenfeld and the Canton of Kusel.The French authorities declared the castle national property.Bit by bit, buildings were auctioned off, walls torn down and stones from the whole area sold as building materials.