Thun is the gateway to the Bernese Oberland and is the starting point for excursions to the mountains around Lake Thun. It takes about 1.5 hours from Thun to reach the summit of the Stockhorn, Niesen or Niederhorn (each are around 2,000 m.a.s.l.).

Thun has amazing mountain scenery and the city affords majestic views of the Eiger, Mönch and Jungfrau as well as of the Blüemlisalp massif. The intense colour contrast between the turquoise blue lake, the lush green meadows and the white four-thousanders adds to the appeal of the unique Lake Thun region. The three mountains around Lake Thun, the Stockhorn, Niesen and Niederhorn, form a popular hiking, leisure and recreation area. All mountains have mountain railways access.