single vineyard in the municipality of Rüdesheim in the German wine-growing region of Rheingau. The name refers to Emperor Charlemagne (742-814). According to legend, during a boat trip on the Rhine to his palace in Ingelheim (Rheinhessen), he observed that the snow melted first on the slopes of Rüdesheim Mountain and thereupon ordered that a vineyard be established here and planted with vines from Orléans. The south-facing vineyard at an altitude of 170 to 220 metres above sea level with a slope of 40 to 44% covers 2.2 hectares of vines on stony, dry quartzite slate soil. From here, a view of the Nahe estuary on the other side of the Rhine is possible. Riesling is the main variety cultivated here. The Leitz Johannes winery, for example, has a share in the site.