Discover Prague with a choice of a city tour with time to visit the Christmas Markets in the Old Town Square or a castle hike. Both will reveal why Prague is considered one of Europe's most attractive cities, with a historic city center that's recognized as a UNESCO World Heritage Site. See all the key highlights, including the National Museum, Wenceslas Square, the 1,000-year-old Prague Castle and Old Market Square, where you will find the famous Astronomical Clock.