Poland's two biggest draws split cleanly along one line — Kraków is the historic royal city that survived WWII largely intact, while Warsaw is the modern capital almost entirely rebuilt after being flattened during the war.
Kraków's Main Market Square (Rynek Główny) is one of the largest and best-preserved medieval town squares in Europe, with Wawel Royal Castle and Wawel Cathedral overlooking the river — all original, not rebuilt. Warsaw's Old Town Square (Rynek Starego Miasta) looks similarly historic but is a meticulous postwar reconstruction, since the original was destroyed in 1944.
Kraków's Schindler's Factory Museum and the nearby Kazimierz Jewish Quarter confront WWII history directly, close to Auschwitz-Birkenau. Warsaw's Warsaw Uprising Museum is one of the most powerful war museums in Europe, and the POLIN Museum of the History of Polish Jews adds essential context the smaller Kraków museums don't fully cover.
Kraków feels compact, historic, and tourist-friendly, with its entire old town walkable in a day. Warsaw is a genuine modern capital, its skyline dominated by the Palace of Culture and Science, mixing communist-era architecture with new skyscrapers and a faster, more business-driven pace.
Warsaw is the country's main international gateway with the most flight options. Kraków has its own busy airport too and is the more popular tourist base, particularly for travelers combining it with day trips to Auschwitz or the Wieliczka Salt Mine.
Choose Kraków for an intact medieval old town, easy access to Auschwitz, and a more compact, tourist-friendly trip. Choose Warsaw for a real modern capital city with deeper WWII history museums and a livelier contemporary scene. They're about two and a half hours apart by train, and combining both is a common and easy way to see Poland.