Bolesław the Pious, who died OTD in 1279, became Duke of Greater
#Poland in 1239
https://cromwell-intl.com/travel/poland/?s=mb #travel #history
Travel in Poland
Visit a stone quarry associated with Kraków-Płaszow concentration camp, the German concentration camp Auschwitz-Birkenau, and the Wieliczka salt mine.
Bob the Traveler