The "Historic sites" category covers 79 places where something important happened in the history of Poland and Europe: memorials and former camps, early Piast strongholds, battlefields and historic cemeteries.
The Auschwitz-Birkenau Memorial and Museum in Oświęcim includes the former main camp, Auschwitz I, and Birkenau in Brzezinka, the largest part of the complex – both are UNESCO-listed. Entry is free but requires a named entry card booked online only. Other important memorials include the State Museum at Majdanek in Lublin and the Sobibór Memorial. Ostrów Lednicki tells a very different chapter of history – an island with the ruins of Mieszko I's palace and baptismal pools, the probable site of the Baptism of Poland. In Poznań, the multimedia Brama Poznania introduces the history of Ostrów Tumski. In Podlachia, the Bohoniki mizar is the largest existing Muslim cemetery in Poland, and in Ossów you will find the cemetery on the battlefield of the 1920 Battle of Warsaw.
Sites in this category are spread across the country: the most are in Greater Poland (about 10), followed by the Silesian region and Lesser Poland (a handful each).
In practice: allow one and a half to two and a half hours, and at least half a day for Auschwitz I and Birkenau together. Memorial sites are not suitable for young children – the Auschwitz museum does not recommend visits for children under 14. Many places are free or have a free day: Ostrów Lednicki on Wednesdays.