Nearby, King Carloman erected a Benedictine monastery in 876, with Werinolf as first abbot, and also built the abbey church in honour of the Apostle St. Philip.

According to the legend, in 1489, a 3-year-old local boy who had drowned in the river was revived when his grieving mother placed him in front of a wooden statue of the Virgin Mary at the high altar.

News of the miracle quickly spread, and the chapel was immediately extended by the erection of a nave and a covered walkway.

This masterpiece of the goldsmith's craft was a gift from Isabeau, Queen of France, a member of the Wittelsbach Bavarian royal family.

The heart of King Ludwig II of Bavaria, the builder of Neuschwanstein castle, lies in this chapel, along with those of his grandfathers and father.