Aarwangen

Aarwangen District is a constitutional district in the northeast corner of the canton of Bern in Switzerland, with its seat at Aarwangen. From 1 January 2010, the district lost its administrative power. Since 2010, it remains a fully recognised district under the law and the Constitution (Art.3 al.2) of the Canton of Berne. Its municipalities became part of the administrative region Emmental-Oberaargau. It is surrounded by the canton of Solothurn on the north, the canton of Aargau on the northeast, the canton of Lucerne on the east, the district of Trachselwald on the south, the district of Burgdorf on the southwest, and the district of Wangen on the west. The district includes the following 25 municipalities and has an area of 154 km2 (59 sq mi): CH-4912 Aarwangen CH-4944 Auswil CH-4913 Bannwil CH-3368 Bleienbach CH-4917 Busswil bei Melchnau CH-4955 Gondiswil CH-4932 Gutenberg CH-4936 Kleindietwil CH-4900 Langenthal CH-4935 Leimiswil CH-4932 Lotzwil CH-4934 Madiswil CH-4917 Melchnau CH-4924 Obersteckholz CH-4943 Oeschenbach CH-4919 Reisiswil CH-4914 Roggwil CH-4938 Rohrbach CH-4938 Rohrbachgraben CH-4933 Rütschelen CH-4911 Schwarzhäusern CH-4922 Thunstetten CH-4916 Untersteckholz CH-4937 Ursenbach CH-4923 Wynau

Schwarzhäusern is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.

Langenthal is a town and a municipality in the district of Oberaargau in the canton of Bern in Switzerland. On 1 January 2010 the municipality of Untersteckholz merged into the Langenthal. On 1 January 2021 the former municipality of Obersteckholz merged into Langenthal.Langenthal is an educational, cultural, and economic center for the region of Oberaargau.

Langenthal railway station (German: Bahnhof Langenthal) is a railway station in the municipality of Langenthal, in the Swiss canton of Bern. It is located at the junction of the standard gauge Langenthal–Huttwil line of BLS AG and Olten–Bern line of Swiss Federal Railways. The station is also the junction of the 1,000 mm (3 ft 3+3⁄8 in) gauge Langenthal–Oensingen and Langenthal–Melchnau lines of Aare Seeland mobil.

Bannwil railway station (Bahnhof Bannwil) is a railway station on the metre-gauge line Langenthal–Oensingen at Bannwil, canton of Bern, Switzerland. It was opened in 1907 by the Langenthal-Jura-Bahn. The line is currently operated by Aare Seeland mobil (ASM). The original station building with its goods shed is in the architectural inventory of the canton of Bern.

Thunstetten Castle is a castle in the municipality of Thunstetten of the Canton of Bern in Switzerland. It is a Swiss heritage site of national significance.

Langenthal Süd railway station (German: Bahnhof Langenthal Süd) is a railway station in the municipality of Langenthal, in the Swiss canton of Bern. It is an intermediate stop on the standard gauge Langenthal–Huttwil line of BLS AG.

Bannwil is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.

Thunstetten is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.

Wynau is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.

Wolfwil is a municipality in the district of Gäu in the canton of Solothurn in Switzerland.

Lotzwil railway station (German: Bahnhof Lotzwil) is a railway station in the municipality of Lotzwil, in the Swiss canton of Bern. It is an intermediate stop on the standard gauge Langenthal–Huttwil line of BLS AG.