Heidelberger Schloss is an ancient city built in the thirteenth century on the top of the king's throne. It is a mixture of Gothic, Baroque and Renaissance styles. It is the full expression of the German Renaissance. The main entrance of the castle is carved with armored warriors, the central garden has a fountain and four granite columns, surrounded by concert halls, glass halls and other buildings. It was raining in Heidelberg, and the color of the entire castle was deeper and deeper. Looking down from Heidelberg, the Church of the Holy Spirit in the distance is very conspicuous. Built in 1398, this church is a Baroque building with a beautiful minaret. There are burial areas of the Electors of the past, and there are stained glass in the church on the subject of the atomic bombing of Hiroshima, Japan.