A shady spot in Isselburg, just before the Dutch border. A hornbeam hedge on one side, an elderberry bush next to it, behind it the old workshop building of the hosts. That's all there is to it. In June, the garden smells of elderflower; in autumn, the clusters hang black over the meadow. Both a motorhome and a tent fit here. The water castle in the Anholt district is reached across flat land, as it is everywhere in the lower Rhine area. It's 42 kilometers to Bottrop to the Tetraeder on the slag heap.¹