 Wahnwegen borders in the north on the municipality of Konken, in the northeast on the municipality of Hüffler, in the east on the municipality of Quirnbach, in the southeast on the municipality of Henschtal, in the south on the municipality of Steinbach am Glan and in the west on the municipality of Herschweiler-Pettersheim.Wahnwegen is a clump village whose beginnings were as an agricultural village that grew up at a crossroads.Along both these roads stand the village's older houses, which in many cases are typical Westrich (an historic region that encompasses areas in both Germany and France) farmhouses ("Einfirsthäuser" – houses with a single roof ridge), built either with a gable or an eaves facing the road.