A 81 (German Federal Highway) to Ueberlingen has been upgraded in recent decades to B31n, where "n" stands for new. Rail The Stahringen–Friedrichshafen railway runs through Ueberlingen, through a two section tunnel under the historical city core. Ueberlingen is served by three stations which are from east to west Ueberlingen-Nussdorf, Uberlingen, and Ueberlingen-Therme. Uberlingen is the main station which is served by inter-regional-express (IRE) trains from Basel German station to Ulm main station and regional trains (RB) from Friedrichshafen to Singen Hohentwiel, while Ueberlingen-Therme and Ueberlingen Nussdorf are only served by the regional trains. Water Ueberlingen is linked to Wallhausen a suburb of Constance by ferry, where the city center of Constance can be reached by bus. In late spring through early fall, regular water transportation links Überlingen with Constance, Meersburg, and the island of Mainau. Twin towns – sister cities Überlingen is twinned with: Chantilly, France (1987) Bad Schandau, Germany (1990) Some of the hamlets and villages Andelshofen was first mentioned in 1239 as Andelsowe. The site was the property of the Knights of St. John (Order of Malta). In 1552 and again in 1634, the site was burned to the ground, and later rebuilt. Judicial authority over the village lay with Überlingen. In 1805 Baden annexed Andelshofen, and it was reorganized into a part of the Überlingen administrative district. In 1927, the commune was dissolved and Andelshofen was incorporated into the commune of Überlingen. Its various hamlets came under the administrative jurisdiction of other small towns: Hagenweiler to Lippertsweiler, Schonbuch to the commune of Bambergen. Aufkirch was first mentioned in 1242 as Ufkilche. The site was the location of the original Parish Church of Überlingen, St. Michael. The church with its surrounding territory was transferred in 1311 to the Engelberg Abbey, and in 1343 to the Teutonic Order on the Island of Mainau. These came to Überlingen in 1557. From then, the church became a filial parish of the Munster in Überlingen, and village territory went to Überlingen with the status of hamlet. Bambergen was first mentioned in 1268. In the 13th and 14th centuries the seat of Regentsweil estate, its property came to the Spital in Überlingen in 1352. The free imperial city of Überlingen exercised both low and high justice over Bambergen and a few smaller nearby hamlets, including Reuthemühle. Accordingly, Bambergen was the seat of several villages and hamlets belonging to the Überlingen Spital. In