But it was in landscape gardening that German art had made its most wonderful advancement. Having small opportunity for true architecture because of the narrow engineering limitations of the city's construction, talent for architecture had been turned to landscape gardening. I use the term advisedly for the very absence of natural landscape within a roofed-in city had resulted in greater development of the artificial product. The earlier efforts, few of which remained unaltered, were more inclined toward imitation of Nature as it exists in the world of sun and rocks and rain. But, as the original models were forgotten and new generations of gardeners arose, new sorts of nature were created. Artificial rocks, artificial soil, artificially bred and cultured plants, were combined in new designs, unrealistic it is true, but still a very wonderful development of what might be called synthetic or romantic nature. The water alone was real and even in some cases that was altered as in the beautifully dyed rivulets and in the truly remarkable "Fountain of Blood," dedicated to one of the sons of William the Great--I have forgotten his name--in honour of his attack upon Verdun in the First World War. In these wondrous gardens, with the Princess Marguerite strolling by my side, I spent the happiest hours of my sojourn in Berlin. But my joy was tangled with a thread of sadness for the more I gazed upon this synthetic nature of German creation the more I hungered to tell her of, and to take her to see, the real Nature of the outside world--upon which, in my opinion, with all due respect to their achievements, the Germans had not been able to improve. ~3~ While the women of the Royal House were not permitted of their own volition to stray from the Royal Level, excursions were occasionally arranged, with proper permits and guards. These were social events of consequence and the invitations were highly prized. Noteworthy among them was an excursion to the highest levels of the city and to the roof itself. The affair was planned by Admiral von Kufner in Marguerite's honour; for, having spent her childhood elsewhere, she had never experienced the wonder of this roof excursion so highly prized by Royalty, and for ever forbidden to all other women and to all but a few men of the teeming millions who swarmed like larvae in this vast concrete cheese.