We took a walk to this historic monument of Tadeusz Kościuszko, a Polish and American war hero. There are 3 other similar mounds (though not as famous as this one) around Krakow that we plan on visiting as well.
You can read Tadeusz' story at:
http://www.kopieckosciuszki.pl/
There are many wooden chapels in Poland, this one is on the way to the mound...
