Auflance is located on the frontier ofBelgium along its eastern border some 38 km east by south-east ofSedan and 17 km north-west ofMontmédy. Access to the commune is by the D17 road fromPuilly-et-Charbeaux in the north-west which passes through the centre of the commune and the village and continues toSapogne-sur-Marche in the south-east. A small country road crosses the Belgian border and goes toVillers-Devant-Orval. The commune is mixed forest and farmland.[3]
TheMarche river forms the south-eastern border of the commune as it flows south-west to join theChiers nearMargut. ThePaquis river passes through the centre of the commune from north-west to south-east where it joins theMarche on the border of the commune. TheCoquerte flows from the north in the west to the commune to join thePaquis.[3]
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TheChateau of Auflance (17th century) is registered as a historical monument.[7] In the 17th century the Custine family came to settle in this border commune. They built a castle of which only a few vestiges remain: a round tower, tunnels, and a remarkable Renaissance door decorated with coats of arms and surmounted by aPietà.
In theChurch the Funeral Chapel of the Custines has a hallway decorated with coats of arms which were made during theFrench Revolution
TheSaints of Auflance Chapel from the 13th century has 13 statues which have been stored out of fear of theft. These statues of the Saints of Auflance are registered as historical objects.[8]