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Selzach is a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

Selzach railway station (German: Bahnhof Selzach) is a railway station in the municipality of Selzach, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Jura Foot line of Swiss Federal Railways.

Bettlach (German pronunciation: [ˈbɛtˌlax]; French: Bâche) is a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

Leuzigen is a municipality in the Seeland administrative district in the canton of Bern in Switzerland. The village is situated between the cities Biel/Bienne and Solothurn and borders on the river Aare.

Bettlach railway station (German: Bahnhof Bettlach) is a railway station in the municipality of Bettlach, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Jura Foot line of Swiss Federal Railways.

Arch is a municipality in the Seeland administrative district in the canton of Bern in Switzerland. It is also a church parish of the Swiss Reformed Church.

Lommiswil is a municipality in the district of Lebern in the canton of Solothurn in Switzerland.

Lommiswil railway station (German: Bahnhof Lommiswil) is a railway station in the municipality of Lommiswil, in the Swiss canton of Solothurn. It is an intermediate stop on the standard gauge Solothurn–Moutier line of BLS AG and is served by local trains only.

Länggrien (also known as Aareinseli) is an island in the River Aare, located in the canton of Solothurn, Switzerland. The island has a maximum length of 600 metres and a maximum width of 270 metres. Its highest point is 428 metres above sea level, a few metres above the river level. The minimum distance from the shore is about 50 metres. Politically the island belongs to the municipality of Selzach in the district of Lebern.

Bellacher Weiher (also spelt Bellacherweiher, Bellacher-Weiher, or Weier) is a small lake at Bellach in the Canton of Solothurn, Switzerland. Its surface area is 3.3 ha. The pond was formed in 1548. Lake and surroundings are a nature preserve.

Hessigkofen is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Hessigkofen, Tscheppach, Brügglen, Aetingen, Aetigkofen, Bibern (SO), Gossliwil, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.

Bibern is a former municipality in the district of Bucheggberg, in the canton of Solothurn, Switzerland. On 1 January 2014 the former municipalities of Bibern (SO), Tscheppach, Brügglen, Aetingen, Aetigkofen, Gossliwil, Hessigkofen, Mühledorf (SO), Küttigkofen, Kyburg-Buchegg merged into the new municipality of Buchegg.