The legendary Tadeusz Kościuszko who this memorial mound is named after also has the distinction of having Australia's tallest mountain named after him (Mount Kościuszko), so undertake this walk to discover a little more about the man.
Mt. Rysy is the tallest mountain in Poland. The hike takes you across some stunning alpine area and some amazing alpine lakes near the border of Slovakia. Be warned that this a very long hike that is gruelling and demanding. It requires some scrambling near the top that is not for the faint-hearted. But the views are wroth the effort and none of the scrambling is particularly complex. There are chains to guide you.
This hike can also be done from the Slovakian side which apparently easier.