The remains of the Castle can be visited
Burgberg Castle (Ruin)

The Burgberg ruin, also known as Burg Heimenhofen, stands on a rock outcrop above the village of the same name in the Oberallgäu region. This site in Bavaria is notable for the well-preserved north wall of a residential tower from the early 12th century, considered one of the oldest examples of its kind in the Allgäu.
History+
The origins of the hilltop castle date back to the early 12th century. Around 1140, Burkart and Wernher von Burgberg appeared in documents as vassals of the Augsburg Prince-Bishopric, acting as benefactors for various monasteries. After the Burgberg family died out, the lordship passed to the Lords of Rettenberg around 1327. Following the death of the last Rettenberg in 1350, the property was divided, and in 1351, the castle was sold to the brothers Marquard and Oswald von Heimenhofen. Marquard retained Burgberg, while Oswald acquired the neighboring lordship of Berghofen and began construction of Fluhenstein Castle. In the 15th century, parts of the lordship had to be sold to the Augsburg Diocese and the Counts of Montfort due to financial difficulties, but were later repurchased by Jörg von Heimenhofen. During the Peasants' War in 1525, the castle was plundered, and in 1546, it was occupied by troops of the Swabian League. In 1563, Hans Burkart von Heimenhofen, whose son had died in the Turkish Wars, sold the lordship to Count Hugo von Montfort-Rothenfels.
Source: Wikipedia · Licence: CC BY-SA 4.0
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: 47.5328, 10.2895