Olten

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".

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

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.

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).

The Kleinholz Stadion is an ice hockey stadium located in Olten, Switzerland. It is mainly used by EHC Olten, an ice hockey club that currently plays in the Swiss National League B. It was built in 1961 and renovated in 2014.

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.

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

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

Aarburg Castle (German: Festung Aarburg) is a castle in the municipality of Aarburg in the canton of Aargau in Switzerland. It is located high above the town Aarburg on a steep, rocky hillside. The castle was built around a medieval castle, which controlled the narrow point on the Aare river and served as the seat of Aarburg Vogt. It is classified as a Swiss heritage site of national significance. Today it houses the Kantonale Jugendheim, for holding and rehabilitating juvenile offenders.

The Aarewaage (in local Swiss German dialect: Woog) is a whirlpool phenomenon in the Swiss river Aare at Aarburg, canton of Aargau. In 1996, it was added to the Federal Inventory of Landscapes and Natural Monuments.At the location of the Aarewaage, the river widens into a broader natural basin and at the same time meets a rock on which Aarburg Castle is located. The large whirlpool, the "Waage", is created by the main current of the Aare passing by calmer water in the basin, increasing its water level in cycles, further increased by part of the current being diverted by the castle rock and the influx of the two streams Tych and Dorfbach.Several times, the existence or appearance of the Aarewaage was threatened by planned construction work. In the 1950s, an expansion of the Ruppoldingen hydroelectric power station that wasn't carried out would have destroyed the basin. In the 1970s, a railway bridge was planned at the Aarewaage, but due to landscape preservation concerns, a tunnel was constructed instead.In December 2013, a part of the side wall at the Aarewage collapsed. The wall, which itself is a protected monument, was restored from April to May 2014.

Frohburg Castle is a castle in the municipality of Trimbach of the Canton of Solothurn in Switzerland. It is a Swiss heritage site of national significance.

Aarburg-Oftringen railway station (German: Bahnhof Aarburg-Oftringen) is a railway station in the municipality of Aarburg, in the Swiss canton of Aargau. It is located at the junction of the standard gauge Olten–Bern and Olten–Lucerne lines of Swiss Federal Railways.