A historically important town on the Neckar with a population of around 150,000 in the north of the German wine growing region of Baden in the Badische Bergstrasse area. There are numerous sightseeings like the oldest German university, which was founded in 1386. For many centuries, Heidelberg was a centre of art, science and also viticulture. In the 1960s, the traditional sites opposite Heidelberg Castle became overgrown. The high amount of work in the extreme steep slopes was no longer worthwhile. In 1998, viticulture was reactivated. Heidelberg's individual sites are called Burg, Dachsbuckel, Dormenacker, Heiligenberg, Herrenberg and Sonnenseite ob der Bruck.