40 Aleja Wojska Polskiego. One can see a plaque situated on a building wall that says:

In honour of
cavalry captain Witold Pilecki
1901-1948
the voluntary prisoner of Auschwitz

Having left this house on September 19, 1940, he voluntarily joined people caught in the roundup by the German occupants. The decision had been approved by the command of the Secret Polish Army.
Afterwards, as a prisoner of the concentration camp Auschwitz, he organized the camp conspiration (a.k.a. ZOW) commanded by the Home Army (ZWZ-AK).

After the escape from the camp in April 1943 he worked in the Home Army Headquarters and then fought in the Warsaw Uprising.

In the communist Poland he was imprisoned.
After the cruel investigation he was sentenced to death penalty and murdered on May 25, 1948 by officials of the communist regime in the Mokotów prison in the Rakowiecka street in Warsaw.

He died for the freedom of Poland.