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Photo: 1rhb, CC BY-SA 4.0 via Wikimedia Commons
Computer and technology museum, including a collection of movie cars.
Enter Technikwelt Solothurn is a museum for computer and consumer electronics in Derendingen and the largest private technology collection open to the public in Switzerland. Now a non-profit foundation, it originated as the project of Swiss entrepreneur Felix Kunz. Originally opening as ENTER Museum in Solothurn in 2011, the museum closed in 2022 and re-opened in 2023 at as Enter Technikwelt Solothurn at a new location in Derendingen.
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Solothurn Natural History Museum
Mostly focused on the local fauna, flora, and geology in very well put together exhibits. There is also a temporary exhibition in the basement which changes every 6 months or so. Information is mostly only in German.
Solothurn Cathedral
The cathedral is impossible to miss as it dominates the Solothurn skyline. Entry into the cathedral is free. You can go up the tower which offers views over the town, river valley, Jura mountains, and on a clear day a panorama of the Alps. The tower entrance is on the outside of the building at the rear of the Cathedral. The cost is stated at the entrance door and you pay when you reach the top of the tower which serves as the cashier/gift shop. The tower is closed in winter.
Old Arsenal Museum
A large collection of weapons and armour. The old building itself is very impressive too, and is turned into a giant advent calendar from the outside during December.
A section of the towns fortifications that were not torn down and now serve as a park where visitors can walk along or below the walls. The walk along the wall offers an easy (and free) view of the Alps on a clear day. A number of events take place in the park. A unique sight is the Soldatendenkmal (soldier's monument) which commemorates the Swiss soldiers that died in service watching the borders during the world wars.
Clock tower
A clock tower overlooking the main square. The building is the oldest in Solothurn and there is an astronomical clock similar to the Zytglogge in Bern. It features a verse in German and Latin, probably by Glarean (1488-1563), that states that there is "no older city in Gaul than Solothurn, except Trier", and calls these cities sisters.
A palace that is partially open as a museum dedicated to the Solothurn aristocracy from the 17th to 19th centuries. It is a 5-minute walk from the Verenaschluct, or take the tram to Feldbrunnen.