Cracow is a wonderful, well-preserved city and one of the jewels of Central Europe, definitely on a par with Prague. Although I only had a half day to explore the town, I liked the atmosphere a lot (it's also less touristy and crowded than other similar cities). The Wawel Hill with the cathedral and the palace is very interesting, and the main square is one of the most beautiful squares in the world. The many remnants of the Habsburg Empire were an added bonus. Also very interesting is the Kazimierz district, with its remnants of the once vibrant Jewish life. Cracow is of course not a hidden gem anymore, but I do think that more people should visit it.