Aare

Wangen an der Aare Castle is a castle in the municipality of Wangen an der Aare of the Canton of Bern in Switzerland. It is a Swiss heritage site of national significance.

Wangen an der Aare is a municipality in the Oberaargau administrative district in the canton of Bern in Switzerland.This small town lies between Olten and Solothurn in rural surroundings on the Aare, a major river of the west-central lowland region of Switzerland, the Mittelland. An ancient wooden covered bridge crosses the Aare at this point.

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

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

The Flumenthal Dam is a regulating dam at Flumenthal, Switzerland, which was erected as the most important element of all the works of the Second Jura water correction. It was built to regulate the outflow of Seeland's three-lake hydrologic system as far downstream as Solothurn and the confluence with the river Emme River.

Wangen District was one of the 26 administrative districts in the canton of Bern, Switzerland. Its capital was the municipality of Wangen an der Aare. The district had an area of 129 km² and consisted of 23 municipalities. It was dissolved on 31 December 2009 when it and the Aarwangen District became part of the Oberaargau district.^a In 2009, the municipalities of Wanzwil and Röthenbach bei Herzogenbuchsee became part of the municipality of Heimenhausen^b In 2008 Oberönz became part of Herzogenbuchsee