Heidelberg Old Town, Germany.

Heidelberg is located in Baden-Württemberg, Germany, on the banks of the Neckar River, which flows from the Oden Valley to the Rhine Valley. The history of Heidelberg can be traced back to the time of the Celtic settlement. In the 12th century, the University of Heidelberg was established, making it a cultural center of Europe. Famous attraction: Heidelberg Castle, located on the top of Königstuhl, is a representative work of the German Renaissance, combining Gothic, Baroque, and Renaissance styles.