The Königstuhl (German pronunciation: [ˈkøːnɪçˌʃtuːl]), translated "Kings seat", is a 567 metre high hill in the Odenwald Mountains and in the city of Heidelberg, in the German state of Baden-Württemberg. The Königstuhl summit allows visitors a spectacular view of the city of Heidelberg and the River Neckar as well as the Rhine Valley. On days with good conditions the view extends to the Pfaelzerwald (Palatinate Forest), which is roughly 40–50 km away.
The hill is linked to Kornmarkt, in Heidelberg's Altstadt, by the Heidelberger Bergbahn, a two section historic funicular railway that stops at the Heidelberg Castle, located on the lower slopes of the Königstuhl, and the Molkenkur restaurant/hotel and the ultimate stop at the mountain top which host a restaurant, an entertainment park for kids and various walking paths.
The Max Planck Institute for Astronomy is located near the summit of the Königstuhl, as is the historic Landessternwarte Heidelberg-Königstuhl astronomical observatory, established in 1898. Between 1912 and 1957, Karl Wilhelm Reinmuth discovered almost 400 asteroids whilst working from this observatory.
Several telecommunications facilities are located on the Königstuhl, including the Fernsehturm Heidelberg (Digital TV (DVB-T), Radio and Microwave), the Telecom Telecommunication Tower Heidelberg (Microwave and FM) and the now inactive Telecommunication Tower of US-Forces Heidelberg (Microwave).