In 1150, a wooden bridge was built across the Lahn. The long-distance road from Cologne to Frankfurt am Main subsequently ran through Limburg. In the early 13th century, Limburg Castle was built in its current form. Shortly afterwards, the town passed into the ownership of the Lords of Ysenburg. In 1214, the community was granted town rights. Remains of the fortification wall from the years 1130, 1230 and 1340 with a maximum length of roughly one thousand metres indicate to this day the blossoming town's quick development in the Middle Ages. There is proof of a mint in Limburg in 1180. thumb|Mediaeval window at the back of the cathedral (peristyle) One line of the Lords of Ysenburg resided from 1258 to 1406 at Limburg Castle and took their name from their seat, Limburg. From this line came the House of Limburg-Stirum and also Imagina of Isenburg-Limburg, the wife of the German King Adolf.
In 1150, a wooden bridge was built across the Lahn. The long-distance road from Cologne to Frankfurt am Main subsequently ran through Limburg. In the early 13th century, Limburg Castle was built in its current form. Shortly afterwards, the town passed into the ownership of the Lords of Ysenburg. In 1214, the community was granted town rights. Remains of the fortification wall from the years 1130, 1230 and 1340 with a maximum length of roughly one thousand metres indicate to this day the blossoming town's quick development in the Middle Ages. There is proof of a mint in Limburg in 1180 thumb|Mediaeval window at the back of the cathedral (peristyle) One line of the Lords of Ysenburg resided from 1258 to 1406 at Limburg Castle and took t.heir name from their seat, Limburg. From this line came the House of Limburg-Stirum and also Imagina of Isenburg-Limburg, the wife of the German King Adolf.