Before leaving, it is necessary to do some homework. Otherwise, I spent a whole day looking for Prague Castle in the Old Palace, St. Witt's Cathedral and Gold Lane. In fact, the gathering of one day's sightseeing is Prague Castle. From the ninth century, Prague's Prince first built a castle on the mountain of Voltava. After numerous renovations and extensions, it has finally become the largest and most beautiful castle in the world today, gathering the artistic essence of each historical period. There are many scenic spots, tourists and sunshine in the castle. It needs to arrange enough time, physical strength and anti-dumping supplies. Anyway, the eyes are not enough to see, not carefully miss anything. But it's good to have regrets. Come again next time. Prague Castle was not built in one time, nor could it be seen in a day.