The remains of the Castle can be visited
Hochburg Castle

The Hochburg castle ruin, also known as Hachberg Castle, stands between Emmendingen and Sexau in Southern Baden. It is considered the second largest castle complex in Baden and is an example of medieval defensive architecture.
History+
The origins of the Hochburg likely date back to the 11th century, when Dietrich von Emmendingen, who later called himself von Hachberg, founded the complex as a clearing castle. The first documented mention dates to 1127. After the extinction of the Hachberg family, the castle came into the possession of the Zähringer around 1147. From 1161, Herrmann IV of Baden was lord of the castle, which became the center of power for the Margraves of Baden-Hachberg around 1212. In 1415, Margrave Bernhard I acquired the castle from the indebted Otto II of Baden-Hachberg. The Hochburg survived the war of the Upper Rhenish League of Cities in 1424 and the Peasants' War in 1525 unscathed. Under Margrave Karl II, the castle was expanded into a Renaissance fortress from 1553 onwards and later supplemented by seven bastions by Margrave Georg Friedrich.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: http://de.wikipedia.org/wiki/Datei:Hochburg_Panorama.jpg
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 48.1167, 7.9006