Wawel is situated on a limestone rock, 228 above sea level, on the bank of the Vistula river. Here you can find Wawel Cathedral and next to it the Wawel Castle. It was the residence of Polish rulers but now is a national cultural institution. There are four parts you can visit in Wawel: the Representative State Rooms, Royal Private Apartments, Crown Treasury with Armoury and the Cathedral. You have to buy tickets for each part you want to visit and you can't take any photos inside. Wawel Hill is close to the centre of Krakow, on walking distance from the main square.