The remains of the Castle can be visited
Aura Church (Ruin)

In the valley of the Franconian Saale, the church ruin of Aura rises. Situated on a small hill near the village of the same name, in the district of Bad Kissingen, it tells of plans thwarted by history.
History+
The origins of the church ruin of Aura date back to the early 17th century. In 1618, the Prince-Bishop of Würzburg, Johann Gottfried I von Aschhausen, commissioned the construction of a pilgrimage church. However, this project was abruptly halted by the outbreak of the Thirty Years' War and the death of the Prince-Bishop, so the church was never completed and remained a ruin.
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: 50.1702, 10.0164