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Origin and history

Freundstein Castle was built in the second half of the 13th century under the joint suzerainety of Murbach Abbey and the Bishop of Strasbourg. As early as 1297, it was offered in fief to the Waldner von Freundstein family, which still kept it today, although reduced to a state of ruin. Its summary architecture, designed to withstand seats, rests on a quadrangular plan in grauwacke bellows, with granite openings. The site, strategic, peaks at 927 m on the route du Vieil-Armand to Col Amic.

As early as the 14th century, the castle suffered major deterioration, aggravated by the earthquake in Basel in 1356. In the 15th century, conflicts multiplied: looted in 1441 by the Mulhousians, then in 1490 by the Soultzians, it was also besieged indirectly via the castle of Weckenthal (acquired in 1457 by the Waldners). The German Peasant War (1525) caused a devastating fire, followed by a new collapse after a lightning strike in 1562. Partially restored in the 16th century, it was definitively abandoned in the early 17th century.

In the 20th century, the ruins were reused as a French military observatory during the First World War (1915–1918), due to their proximity to the front line. Ranked a historic monument in 1922, the site preserves remains of dungeon-logis, murderers and walls pierced with late openings. Today, it attracts hikers for its panorama and its turbulent history, while the nearby inn farm perpetuates its name.

The construction reflects a dual vocation: seigneurial residence and defensive work. Local materials (grauwacke for walls, granite for frames) highlight an adaptation to the resources of the Vosges massif. Despite its early decline, the Freundstein illustrates the Alsatian feudal struggles between noble families (Waldner, Wattwiller), rival cities (Mulhouse, Soultz) and peasant revolts, in a context of transition between customary and Roman law.

Historical sources, such as the works of Charles-Laurent Salch or Gilles Sifferlen, confirm his marginal role in Alsatian castral architecture, marked by functional simplicity. Local legends and studies of the 20th century (e.g. Fr. Loutfi-Duportal, 1920) complete the medieval archives, often lacking in details of daily life in this castle shared between two ecclesiastical suzerans.

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