Burgruine Frohburg

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  • Gyloonda

    The Frohburg is the ruin of a rock castle on the territory of Trimbach in the Swiss canton of Solothurn and is one of the largest medieval castle ruins in the Jura mountains.The castle ruin is classified as nationally worthy of protection, and thus stands on the highest level of monument protection in Switzerland.
    The place was already inhabited in the Bronze Age and then again during the Roman period. In the 10th century, a significant in the region of Olten and Zofingen noble family settled on the Jura ridge. In the immediate vicinity of the castle, the castle and retainers of the lords opened by clearing new land of settlement. Since the late 11th century, the family appears as the Earl of Frohburg in the documents. From the castle name, the gender derived its name. It dominated until the 14th century a large sphere of influence between the Aare and the Rhine in the old regions of Aargau, Buchsgau and Sisgau.
    After a first modest settlement with wooden houses, over the centuries, the counts built a multitude of large structures within the enclosure wall of the castle. In addition to a count's house also service buildings and workshops belonged to the assembly. Of particular interest is a small smelting plant for iron, exploited as an important natural resource in the Jura. In addition, the processing of leg has been proven as another special industry. The castle had at least three water tanks.In the course of the 14th century, the counts of Frohburg lost their privileged position, and the individual buildings in the ancestral castle of the sex were abandoned over time. When the Counts died out around 1367, there were probably no permanent residents in the area, which has since fallen into ruin and was used by residents of agricultural settlements in the area as a stone stock.First investigations of the site before the middle of the 20th century and scientific excavations after 1970 gave rich information about the settlement history of the castle.An in-depth study of Germanism carried out with archaeological studies has shown that the name of the castle is properly called "Frohburg". For example, in the area the place had been referred to until the early 20th century, and it was not until later decades that the inaccurate spelling of Froburg had spread out here and there because of an incorrect approximation of the name to the Old High German word group fro (= Mr.).Today, the resort is one of the popular tourist destinations in the Olten region.

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    • January 29, 2017

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Best Hikes to Burgruine Frohburg

Location: Trimbach, Gösgen, Solothurn, Espace Mittelland, Switzerland


  • Elevation850 m

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