The history of Scheyern (located near the Pfaffenhofen) related with medieval abbey which grown around the estate of Scheyern family.
In some period of the Scheyern’s history abbey was abandoned by monks but in the 1837 they came back after invitation of king Ludwig I.
Its own guise main church of the abbey took in the 18 century. Inside of the church you can see Baroque altar with Byzantine relic of the True Cross. I don’t know exactly how the abbey managed to receive this relic but I suppose that it was delivered into the abbey during the Crusades era.