A stone house on the site of current Mheer Castle was first mentioned in 1314. It was probably built long before that, because the Lords of Mheer were already mentioned around 1100. In the 14th century the castle went to the Van Imstenraedt family through marriage. The castle stayed in this family until 1668, then it went to the De Loë family. They still own the castle.
The castle is situated against the slope of a hill and thus has a dry moat. From the original 14th century castle only wall fragments remain. This original castle probably consisted of three wings surrounding a courtyard with the fourth side closed by a curtain wall. The present bailey dates back to the 16th and 17th century.
The present castle was rebuilt, with the use of original wall fragments, on the medieval foundations in the 17th century. Also in later centuries, up until the 20th century, a lot of rebuilding took place.References:
The Château du Haut-Koenigsbourg is situated in a strategic area on a rocky spur overlooking the Upper Rhine Plain, it was used by successive powers from the Middle Ages until the Thirty Years' War when it was abandoned. From 1900 to 1908 it was rebuilt at the behest of the German kaiser Wilhelm II. Today it is a major tourist site, attracting more than 500,000 visitors a year.
The first records of a castle built by the Hohenstaufens date back to 1147. The fortress changed its name to Koenigsburg (royal castle) around 1157. The castle was handed over to the Tiersteins by the Habsburgs following its destruction in 1462. They rebuilt and enlarged it, installing a defensive system designed to withstand artillery fire.
The fortification work accomplished over the 15th century did not suffice to keep the Swedish artillery at bay during the Thirty Years War, and the defences were overrun.