Margravine Sibylla Augusta had made several pilgrimages to Einsiedeln in the Swiss canton of Schwyz and had a replica of the Einsiedeln Chapel of Grace built in her Schlackenwerth castle grounds in 1709. in 1715, she donated an identical chapel for Rastatt, probably in gratitude for the Peace of Rastatt concluded the year before.
Children discover Rastatt:
From a trip to Einsiedeln in Switzerland, the margravine brought back a consecrated statue of Our Lady. This was placed in the chapel. Many believers prayed there for themselves, their children, parents and relatives.
Above the small altar you can see Our Lady and the Child Jesus with black faces. Black-painted Madonnas are venerated by large parts of the faithful as particularly miraculous. On many panels inside the chapel one reads that people give thanks because Our Lady had helped.
On a trip to Einsiedeln, the 7-year-old hereditary prince Ludwig Georg, who until then had been mute, began to speak. The peace in Rastatt and the acquisition of speech for the hereditary prince were probably the reason for the construction of the Einsiedeln chapel.