Goseck Castle is thus one of the border castles on the Saale. The "castrum antiquissimum" was the ancestral castle of the Palatine Counts of Saxony, who are first securely documented as a Goseck count family with Frederick I around 1000. Frederick I built a St. Simeon's Chapel next to the castle as the burial place of his dynasty. The sons Adalbert, Dedo and Friedrich were not only important for Goseck. Adalbert (1000-1072) attended the cathedral school in Halberstadt and became a canon there and a cathedral provost in 1032. In 1043 he received the appointment as archbishop of Hamburg and Bremen. Missionaries reached Iceland and Greenland on his behalf. In 1060 he established the bishoprics of Ratzeburg and Mecklenburg. Count Palatine Dedo founded a Benedictine monastery on the site of the old castle in 1041. His brother Frederick II founded a provostry in nearby Sulza. As early as 1183 the sale of monastery property began, and in 1540 the monastery period ended with secularization. In 1548 it came into the possession of Georg von Altensee.

Due to changing owners and extensive rebuilding in the 16th and 17th centuries, especially by the von Pöllnitz family, the former monastery complex acquired its Renaissance character. In the period from 1840 to 1945 Goseck was owned by the counts of Zech-Burkersroda. After 1945 the castle was a school and youth hostel. Since 1997, the complex has been owned by the foundation.
Today, the "European Music and Cultural Center Castle Goseck" is located here, which was founded by the Castle Goseck e.V. in 1998. The top-class Goseck Castle Concerts are mainly dedicated to early music and have a charisma that reaches far beyond the borders of the Saale-Unstrut region.
The Gosecker Heimat- und Kulturverein has lovingly furnished a Heimatstube. It offers insight into past life in the Saale valley. Especially in the warm season, the castle courtyard with its famous 170-year-old ginkgo tree invites you to linger.
The oldest solar observatory, 7,000 years old, is located very close to Goseck. It is a stop on the tourist route "Himmelswege". There is an information center at the castle.