How was a castle built in the Middle Ages? With which tools, which technology? Answers to these exciting questions can be found in Friesach in Austria's southernmost province of Carinthia.
2007
1991
1959
1954
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1986
1985
2009
2025
1932
2001
1988
2006
1997
1967
1952
2020
2004
2002
1921