Quart castle is a set of buildings arranged within a fortified perimeter, which respects the natural contour of a difficult rocky slope.The donjon (keep) standing on the highest point of the rock, the functional layout of individual buildings, the chapel and the winding passageways, are evidence of an early or Germanic fortified structure, although current architectural evidence point to more recent periods, as do the first narrative sources, which suggest its origins go back to the end of the 12th century (around 1185).
After the death of Henry of Quart in 1377, the castle and fiefdom went to the Savoys, who sold it to Philibert Laschis in 1550, who in turn sold it almost immediately to the Balbis. In the 17th century, the castle belonged first to Count Nicholas Coardo and then to the Perrone of San Martino, who gave it the Municipality of Quart in 1800.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.