Heidelberg Castle, built in the thirteenth century, is the most famous scenic spot of Heidelberg. Because it was destroyed by the French twice, what we see now is the ruined wall, which gives us the beauty of vicissitudes and incomplete vicissitudes. Standing on the castle, overlooking Heidelberg, the whole city has a good view. The German Pharmacy Museum in the castle is very good, and the world's largest wine barrel is worth visiting.