At the northern entrance to the valley of Andlau, immediately to the east of the Kastelberg, the vineyard area of the Wiebelsberg extends between 250 and 300 metres elevation.
This first foothill, east of the Vosges fault consists of Upper Vosges sandstone, partially covered on the lower slopes by Quaternary reworked clayey sandstone scree. Since the sandstone is mainly composed of quartz crystals cemented by a siliceous and ferruginous matrix, with sometimes intervening layers of clay, the soil is therefore loose, sandy, well-drained and heats up quickly. The steep slope helps the soil to take advantage of all the sunshine, chiefly during autumn.
A broad southern exposure, a steep slope, a river at the foot of the hill, all these elements help to create an ideal microclimate for the production of a Grand Cru wine.

This 12,52 ha site is particularly favourable for Riesling.

The Wiebelsberg was already mentioned in 1828 by the vine expert Stoltz in his Historical and topographical notices on vine-gowning and wines from Alsace.

With its fine, distinctive, very floral bouquet, delicate fruit, and noble, elegant body, Riesling Alsace Grand Cru Wiebelsberg ages admirably.