Leienfels Castle was a late medieval aristocratic castle, immediately northwest of the eponymous village of Leienfels in the region of Franconian Switzerland in Germany.
The ruins of the hill castle are freely accessible and act as a viewing point. The castle may be reached from the village of Leienfels by heading in a northwesterly direction. The site of the castle begins at the edge of the village.
In the vicinity, towards the west, lie the ruins of Bärnfels Castle, to the north, on the Bleistein near Graisch, is the site of Leuenstein Castle. To the southeast is the site of Leupoldstein Castle and, to the southwest, in the valley of the Trubach, were other castles, of which ruins or foundations (Burgställe) still exist.
The castle, whose name is probably derived from Löwenfels ('Lion Rock'), is one of the later castles to be built in Franconian Switzerland and may have been erected in the 14th century at the behest of Seibot I of Egloffstein, who is recorded between 1285 and 1332.
The castle itself is first mentioned in 1372. Lord Götz of Egloffstein had to give his part of the hitherto probably allodial castle to the Bishop of Bamberg after a feud.
In 1380 the castle was captured by troops of the Bishop of Bamberg and Burgrave Frederick V of Nuremberg. Götz of Egloffstein was taken prisoner and incarcerated in Nuremberg. His successor was also frequently involved in feuds. The castle was destroyed in 1397 on the orders of Emperor Wenceslaus.
In the Peasants' War the castle was badly damaged in 1525, but its garrison under Otto of Mengersdorf was able to prevent it being taken. The restoration of the castle was carried out immediately. In 1553, during the Second Margrave War, it was again seriously damaged. Its reconstruction was carried out more slowly this time. In 1594, Leienfels was incorporated into the episcopal Amt of Pottenstein. By 1610, the site was already being described as uninhabitable. In 1643, during the Thirty Years' War the repair of the castle was no longer considered to be worthwhile. In 1646, the bricks were of the surviving buildings were carried off and the site left to decay.
References:Sigmaringen Castle was first mentioned in the year 1077 in the chronicles of Petershausen monastery. The oldest parts of the castle are concealed beneath the alterations made during the 17th and the 19th centuries. The secret of the earliest settlement built on this defendable rock will never be fully revealed: large-scale excavation work would be necessary, which the extensive land development renders impossible. Judging from the many Roman remains unearthed in the area around Sigmaringen, the 12th century keep known as the 'Roman Tower' could be traced back to a Roman predecessor.
The castle remains that have been preserved (gate, great hall and keep) date back to the Staufer period around 1200. The castle remains were integrated into subsequent buildings. The foundations of the castle buildings are to a large extent identical to the surrounding castle wall.
These remains give us a good idea of how the castle might have looked during the 12th century.