Ruine Freienstein, Medieval castle ruin in Freienstein-Teufen, Switzerland
Ruine Freienstein is a medieval castle standing on a hillside above vineyards at 460 meters elevation, with remaining walls and structural elements still visible today. The site shows the layout and features that were typical of castles built during that period.
Built around 1250 by a noble from Tengen, the castle changed hands several times before troops from Winterthur destroyed it by fire in 1443. This event marked the end of the structure as a functioning fortress.
The ruins represent how medieval builders constructed defensive structures using techniques common across this region. You can observe the stonework and layout that reflects defensive principles of that era.
Reaching the ruins requires climbing to a hilltop location, but the views over the vineyards make the effort worthwhile. Wear comfortable shoes and allow time to explore the site and take photographs.
A notable feature is a 33.5-meter-deep water shaft discovered in 1968 that was originally carved into bedrock to supply water to the castle. This demonstrates the lengths inhabitants went to ensure access to fresh water on the hilltop.
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