For a short outing, start at the Ansgaritorhaus near the Am Wall stop and follow the moat-side path towards the mill. Look across the flowerbed, then take the optional uphill paths towards the Rehbrunnen if they suit your group. Return by the same paths to the Ansgaritorhaus, staying on the mill side of Herdentorsteinweg. This gives younger children a clear finish without trying to cover the whole park.
For a longer circuit, continue from the mill through the planted grounds to the designated Herdentorsteinweg crossing. On the other side, look for the large ornamental vase and the old Turkish hazel, then continue towards the Theaterberg. Return across the moat using the public footbridge towards Präsident-Kennedy-Platz and follow the Contrescarpe side westwards. Cross Herdentorsteinweg again at the designated crossing and continue back to your Ansgaritorhaus starting point. Use these landmarks to follow the city’s published botanical walk. Plan by stops and time rather than a fixed kilometre total: slopes, street crossings and optional hill paths make this a different outing from the short mill visit.
For a separate spring-flower stop, begin at the Am Wall pedestrian lights by the former police headquarters. Cross to the squill slope, view it from the public path, then retrace your steps and cross back at the same lights.
Turn the visit into a gentle photo challenge: one view including water, one leaf shape, one sculpture detail and one flower, if anything is blooming. Watch birds from the paths without approaching their resting or nesting places. The red duck houses are floating shelter, not places to investigate up close, and may be removed for maintenance or winter storage.