Dorsten is a town in the district of Recklinghausen in North Rhine-Westphalia, Germany and has a population of about 75,000. Dorsten is situated on the western rim of Westphalia bordering the Rhineland. Its historical old town lies on the south bank of the river Lippe and the Wesel–Datteln Canal and was granted city rights in 1251. During the twentieth century, the town was enlarged in its north by the villages of the former Herrlichkeit Lembeck.