 Wiesweiler lies on the river Glan in the Western Palatinate.Unlike neighbouring places on the Glan, Wiesweiler was not built at the lower end of a side valley opening into the Glan valley, but rather right on the valley's slopes.The ridge to the east is made up of several peaks that run together from the Königsberg (mountain, "not" the former East Prussian city) to Lauterecken, while to the west, the ridge is made up of several outliers of a mountain north of Deimberg.