Single location in the municipality of Sulzfeld (Maindreieck area) in the German production area of Franken. It is named after the catholic saint and patron saint of winegrowers Cyriacus. On the saint's feast day, August 8, 1266, the so-called Cyriacus Battle, one of the great knightly battles of the Middle Ages, took place in Sulzfeld. The south-east to south-facing vineyards, with a slope gradient of 10 to 55%, cover 75 hectares of vineyards on mainly shell limestone soils with Lettenkeuper in places. The original Cyriakusberg, known as "Berg I", was considered privileged before the land consolidation in 1971. The Sonnenberg, which was integrated into the Cyriakusberg in that year, was reactivated as an independent single vineyard in 2013. The varieties cultivated include Silvaner, Riesling,Pinot Blanc and PinotNoir. The Brennfleck, Staudt Roland and Zehnthof Familie Luckert wineries, for example, have shares in the site.