Winznau

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

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

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

Starrkirch-Wil is a municipality in the district of Olten in the canton of Solothurn in Switzerland.

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

Olten District is one of the ten districts of the canton of Solothurn in Switzerland, situated around the city of Olten. Together with the Gösgen District, it forms the electoral district of Olten-Gösgen. It has a population of 56,109 (as of 31 December 2020).

Trimbach railway station (German: Bahnhof Trimbach) is a railway station in the municipality of Trimbach, in the Swiss canton of Solothurn. It is an intermediate stop on the summit branch of the Hauenstein line and is served by local trains only.

Olten railway station (German: Bahnhof Olten) is a major hub railway station in the canton of Solothurn, Switzerland, at the junction of lines to Zürich, Bern, Basel, Lucerne and Biel. As a result, Olten is a railway town and was also the site of the main workshop of the Swiss Central Railway (German: Schweizerische Centralbahn), which became a major workshop for the Swiss Federal Railways (SBB CFF FFS). It is the southern terminus of the Basel Regional S-Bahn S3 and S9 lines, the northern terminus of the Lucerne S-Bahn S8 line, and the western terminus of the Aargau S-Bahn S26 line. Although Olten only has 18,000 inhabitants, the station is used each day by about 80,000 passengers and is one of the 10 busiest in Switzerland, busier than even Geneva. It serves 1,100 trains a day, making it one of the busiest in Switzerland.

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

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.

Olten (High Alemannic: Oute) is a town in the canton of Solothurn in Switzerland and capital of the district of the same name. Olten's railway station is within 30 minutes of Zürich, Basel, Bern, and Lucerne by train, and is a rail hub of Switzerland.

St. Martin is a Roman Catholic church in the town of Olten (Switzerland). It is a three-nave columned basilica without transept with three chorapsideas. The church is considered as the "most significant Neoromanesque Greater Church of Switzerland from the late period of historicism".