The Stiftsberg is the sandstone bluff on which Quedlinburg was founded, and the abbey complex spread across its summit is what the town exists to serve. Walking up from the lower town, through the gate and into the cobbled courtyard, you feel the shift in atmosphere immediately — quieter, higher, with views over the rooftiles stretching toward the flat Harz foothills.
The complex includes the Collegiate Church, the Romanesque palace remains, a small but worthwhile museum in the former abbey buildings, and gardens along the southern edge of the hill. It takes a good half-day to see the whole thing properly. The UNESCO designation covers both the Stiftsberg and the old town below, recognising Quedlinburg as one of the best-preserved medieval townscapes in Central Europe.