Wisenberg, Mountain summit in the Jura, Basel-Landschaft, Switzerland

Wisenberg is a wooded Jura summit of 1,002 m, the easternmost and northernmost peak above 1,000 m in the range. Its summit lies in Basel-Landschaft, on Häfelfingen municipal land near the Solothurn border; only a meadow north of the top breaks the forest. A stone observation tower, raised to 24.6 m in 1987, stands on the summit.

The summit served as a high watch post from the Middle Ages, when the top was cleared of forest. In the early 19th century it became a triangulation point for the survey of the Basel region; the first-order network of 1903 links it with the Lägern, Rigi and Napf. During the First World War it was an artillery observation post of Fortifikation Hauenstein, and a wooden tower was built there, replaced in 1927 by a 9 m stone tower.

The observation tower on the summit is a gathering place where hikers and visitors enjoy taking in the surroundings and spotting landmarks across the region. Local people often visit to watch the landscape transform through the seasons and share their experiences with fellow climbers.

Marked trails from Häfelfingen and Wisen lead to the summit, with rest areas situated regularly along the paths. The routes are accessible and offer different options depending on your starting point and preferred walking time.

The Wisenberg is built from stacked layers of Muschelkalk limestone, about 200 million years old, pushed over the younger Tafeljura during the folding of the Jura in the late Miocene and Pliocene. The rock under the summit is therefore older than the Jura limestone of the main ridge to the south.