Why are there always so many asians in Heidelberg?

Do you know which city attracts quite a few tourists? H-E-I-D-E-L-B-E-R-G ^^ But why is it that you see one Asian tourist group after another here? Heidelberg is a city in the southwest of Germany and is known for its picturesque old town with the castle ruins. In addition, the oldest university in Germany is located here. Therefore, it is not surprising that a...