Take in the grandeur of Dom St Petri. Fit in a service if you can or just take a seat and appreciate a break from the outside world.
You're spoiled for sightseeing choice when spending time in Bautzen. Dom St Petri is a good place to kick off here, but there are loads of other worthy places to experience. Bautzen Reservoir, Kleinwelka Maze, and Old Waterworks are near the principal church and will top off your day nicely.