Stüsslingen

The Geissflue is a hill of the eastern Jura Mountains, located between the Swiss cantons of Basel-Landschaft and Solothurn. The border with the canton of Aargau runs east of the summit on the Geissfluegrat. The Geissflue has an elevation of 962 metres above sea level. It is the easternmost summit above 900 metres in the Jura Mountains.

The Geissfluegrat is a minor summit east of the Geissflue, in the eastern Jura Mountains. It is located between the Swiss cantons of Aargau and Solothurn. With an elevation of 908 metres above sea level, the Geissfluegrat is the highest point in Aargau. It is also the easternmost summit above 900 metres in the Jura Mountains.

Rohr (German pronunciation: [ʁoːɐ̯] ) is a former municipality in the district of Gösgen in the canton of Solothurn in Switzerland. On 1 January 2021 the former municipality of Rohr merged into Stüsslingen.

Lostorf is a municipality in the district of Gösgen in the canton of Solothurn in Switzerland.

Erlinsbach is a municipality in the district of Gösgen in the canton of Solothurn in Switzerland. It was formed from the union on January 1, 2006 of Niedererlinsbach and Obererlinsbach (both were in SO and AG).

The Gösgen Nuclear Power Plant (in German Kernkraftwerk Gösgen, abbreviated in KKG) is located in the Däniken municipality (canton of Solothurn, Switzerland) on a loop of the Aar river. It is operated by the ad hoc society Kernkraftwerk Gösgen-Däniken AG.

Salhöhe Pass (el. 779 m.) is a mountain pass in the Jura Mountains of Switzerland between Kienberg in the canton of Solothurn and Erlinsbach in the canton of Aargau. It connects Kienberg in Solothurn and Erlinsbach in Aargau. The pass road has a maximum grade of 9 percent. Although it is the shortest route between Aarau and Basel, traffic over the pass is moderate. After the Bern citizens had conquered the Unteraargau region in 1415, Salhöhe marked the border between the Old Swiss Confederacy and the Further Austrian possessions of the Habsburg dynasty.

The Niederamt Nuclear Power Plant (in German Kernkraftwerk Niederamt, abbreviated to KKN and not to be confused with the similarly abbreviated Niederaichbach Nuclear Power Plant) was the name for a planned nuclear power plant near the existing Gösgen Nuclear Power Plant in Niederamt in the Canton of Solothurn between Olten and Aarau in Switzerland. The land earmarked for the project would have taken in some of the residential areas of Niedergösgen, Gretzenbach and Däniken.

Obergösgen is a municipality in the district of Gösgen in the canton of Solothurn in Switzerland.

Gösgen District is one of the ten districts of the canton of Solothurn, Switzerland, situated to the northeast of the canton. Together with the Olten District, Gösgen forms the electoral district of Olten-Gösgen. It has a population of 24,793 (as of 31 December 2020).

Schönenwerd railway station (German: Bahnhof Schönenwerd) is a railway station in the municipality of Schönenwerd, in the Swiss canton of Solothurn. It is an intermediate stop on the Olten–Aarau line and is served by local trains only.

Gretzenbach is a municipality in the district of Olten in the canton of Solothurn in Switzerland.