Kraków rewards focused sightseeing, and this list covers the essentials in a compact area. Start at Wawel Royal Castle and the adjoining Wawel Cathedral, the seat of Polish kings and burial place of national heroes, then head to the Main Market Square (Rynek Główny), Europe's largest medieval square, ringed by St. Mary's Basilica and its famous hourly bugle call. From there, the Kazimierz District reveals the city's layered Jewish heritage, while Schindler's Factory Museum grounds the wartime history that also anchors a visit to the Auschwitz-Birkenau Memorial. The Wieliczka Salt Mine rounds things out with an underground world found nowhere else nearby.