Since the Merovingian period, but no later than around the year 800, there was a castle that served as road safety at a Lahn crossing. In the 9th century, the counts resided there on behalf of the Frankish kings and in the 10th century the complex was owned by the Konradiner, who founded the monastery of St. George, today's cathedral, within the fortress Limburc in 910. Up until the 13th century, the castle complex also served as the residence of the canons of the monastery. From the 13th century, the eastern part of the castle complex took on castle-like features as the residence of the Lords of Limburg. The rest of the complex served as a residence for the Burgmannen and was built on with various courtyards and towers. After the Konradiner died out, the castle fell to the House of Isenburg, which formed the Limburg line, and in the 14th century to Electoral Trier, which passed it to the Counts of Leiningen, to the Lords of Ysenburg and in the 16th century to the Landschad von Steinach lent. The castle served as the administrative center for Limburg and the surrounding Trier electoral possessions. In 1802 the castle fell to Nassau-Weilburg, in 1806 to the Duchy of Nassau and in 1866 to Prussia. From that point on, parts of it were empty. From 1883, a trade school was established in the hall building, which expanded to other parts of the castle in the years that followed. In 1929 the late Gothic hall burned down and was reconstructed in 1934 and 1935. In 1945, the state of Greater Hesse took over the building. Today it belongs to the city of Limburg.