Breitenlandenberg ruins, Medieval castle ruin in Turbenthal, Switzerland
Breitenlandenberg is a medieval castle ruin in Turbenthal located on a plateau at 729 meters elevation. Only one section of the original stone wall remains visible today, with foundation walls revealed through archaeological excavations.
The castle was founded by the Landenberg family in the early 1300s and served as a fortification in the region. It was later dismantled in the 1800s after the Werdmüller family faced financial collapse.
The name comes from the Landenberg family, who founded the castle in the early 14th century as a secondary seat alongside Alt-Landenberg and Hohenlandenberg. The visible foundation walls were only uncovered in the winter of 1925/26, so what visitors see today is a 20th-century excavation rather than a continuous ruin.
The ruins sit on a plateau at 729 m above sea level southeast above Turbenthal, reached on foot from the village. The foundation walls uncovered in winter 1925/26 lie in open terrain, so sturdy shoes are advisable. The site has no facilities and no shelter.
Stones from the demolished castle were reused to build the first cotton spinning mill in Turbenthal. This material recycling marks the shift from feudal to industrial times in the region.
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