Achern is a city in Western Baden-Württemberg, Germany. It is located approximately 18 km southwest of Baden-Baden and 19 km northeast of Offenburg. Achern is the fourth largest city in the county of Ortenau (Ortenaukreis), after Offenburg, Lahr / Black Forest and Kehl.  As subsequent to the district reform in the 1970s the population passed the 20,000 mark, Achern requested to be awarded the status of Große Kreisstadt. The status was granted by the State government effective January 1, 1974. Achern collaborates with the communities of Lauf, Sasbach, and Sasbachwalden in administrative matters. Besides Achern itself, the municipality includes the boroughs of Fautenbach, Gamshurst, Großweier, Mösbach, Oberachern, Önsbach, Sasbachried and Wagshurst. Achern is located in the northern Black Forest near the Hornisgrinde, at the entrance to the Acher Valley and not far from the eastern edge of the Upper Rhine Valley. Coming from the Black Forest, the Acher enters the city from the southeast and passes Oberachern on its way to the center of town with the historic center, the Altstadt, situated on the right bank. The Acher then continues on in northwesterly direction between Fautenbach and Großweier and south of Gamshurst, before leaving the city to head for the Rhine. The river gave the city its name. The city contains several artificially created lakes, some of which still produce gravel and sand. The largest lake is called Achernsee, near the Achern Autobahn ramp, in the West of the city. Achern is surrounded by the following communities (starting clockwise from the north): Lichtenau and Ottersweier (both Rastatt County), as well as Sasbach (Ortenau), Lauf (Baden), Sasbachwalden, Kappelrodeck, Renchen, and Rheinau (Baden), all part of Ortenau County. City boroughs Within the municipal borders of Achern, the city is made up of the city center (Kernstadt), and the boroughs that were redistricted into Achern during the District Reform in the 1970s, namely, ...