The remains of the castle can be visited
Aichelberg Castle

Aichelberg Castle Ruin, once the ancestral seat of the Counts of Aichelberg, stands on a mountain in the Swabian Alb in Baden-Württemberg. This hilltop castle was built between 1150 and 1200.
History+
The construction of Aichelberg Castle was undertaken by the Lords of Aichelberg between 1150 and 1200. In 1334, the complex passed into the possession of the Counts of Württemberg. An event was the plundering and destruction of the castle during the Peasants' War in 1525. Following this incident, the ruin served as a quarry, with parts of the building fabric being removed by 1596.
Source: Wikipedia · Licence: CC BY-SA 4.0 · Image: Andreas Kieser / Public domain via Wikimedia Commons
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: 48.6350, 9.5711