Historic Centre of Warsaw
Warsaw's Old Town was established in the 13th century. Initially surrounded by an earthwork rampart, prior to 1339 it was fortified with brick city walls. The town originally grew up around the castle of the Dukes of Mazovia that later became the Royal Castle. The Market Square (Rynek Starego Miasta) was laid out sometime in the late 13th or early 14th century, along the main road linking the castle with the New Town to the north.
Wieliczka and Bochnia Royal Salt Mines
The Wieliczka Salt Mine, located in the town of Wieliczka in southern Poland, lies within the Kraków metropolitan area. The mine continuously produced table salt from the 13th century until 2007 as one of the world's oldest operating salt mines, for most of this time span being a part of the undertaking żupy krakowskie. It is believed to be the world's 14th-oldest company.
Historic Centre of Kraków
Kraków Old Town is the historic central district of Kraków, Poland.[2] It is one of the most famous old districts in Poland today and was the center of Poland's political life from 1038 until King Sigismund III Vasa relocated his court to Warsaw in 1596. The entire medieval old town is among the first sites chosen for the UNESCO's World Heritage List, inscribed as Cracow's Historic Centre.
Auschwitz Birkenau, Nazi Concentration and Extermination Camp (1940–1945)
Auschwitz was a network of Nazi concentration and extermination camps built and operated by the Third Reich in Polish areas annexed by Nazi Germany during World War II. It was the largest of the German concentration camps, consisting of Auschwitz I (the Stammlager or base camp); Auschwitz II–Birkenau (the Vernichtungslager or extermination camp); Auschwitz III–Monowitz, also known as Buna–Monowitz (a labor camp); and 45 satellite camps.