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. Besieged, pillaged then finally burnt to the ground in 1633, the castle was left abandoned for two hundred years.
The ruins were classified as a historical monument in 1862. A restoration project was decided on, starting with the consolidation of part of the ruins. The Alsace region was annexed to Germany in 1871, and Sélestat offered the still majestic ruins of the castle to Kaiser Wilhelm II in 1899. In 1919 Haut-Koenigsbourg becomes the property of the French government and is awarded the status of National Palace.
For many years it was considered fashionable in France to sneer at the castle because of its links to the German emperor. Many considered it to be nothing more than a fairy tale castle similar to Neuschwanstein. However, in recent years many historians have established that, although it is not a completely accurate reconstruction, it is at least interesting for what it shows about Wilhelm II's romantic nationalist ideas of the past and the architect's work. Indeed, Bodo Ebhardt restored the castle following a close study of the remaining walls, archives and other fortified castles built at the same period.
References:First record of Kastelholma (or Kastelholm) castle is from the year 1388 in the contract of Queen Margaret I of Denmark, where a large portion of the inheritance of Bo Jonsson Grip was given to the queen. The heyday of the castle was in the 15th and 16th centuries when it was administrated by Danish and Swedish kings and stewards of the realms. Kastelhoma was expanded and enhanced several times.
In the end of 16th century castle was owned by the previous queen Catherine Jagellon (Stenbock), an enemy of the King of Sweden Eric XIV. King Eric conquered Kastelholma in 1599 and all defending officers were taken to Turku and executed. The castle was damaged under the siege and it took 30 years to renovate it.
In 1634 Åland was joined with the County of Åbo and Björneborg and Kastelholma lost its administrative status.