Krakow is Poland's tourist mecca, and also a gateway to many other must-see sites in the region.Krakow's central Grand Square (Rynek Glowny), the largest plaza of medieval Europe and one of the world's finest with its spectacular landmarks, has remained the hub of the city since the 13th century. Krakow residents and visitors come here to meet each other, to do business, to shop, and to enjoy themselves.