Whether you'd like to worship or learn a little about the story behind the building, Michaelskirche is a popular site to visit. Check to see if this sanctuary is publicly accessible to experience the calmness it offers inside.
This house of prayer in Kelheim comes recommended by fellow travelers, so make sure it features on your schedule. Don't think the sightseeing ends there, however. There are loads more options ready for you to explore after Michaelskirche. Weltenburg Abbey, Danube Gorge, and Castle Prunn are close by.