The dominating ruins are those of Aggstein—once a dreaded name on the Danube, for the lordly owners of this castle were famous, even among the many robber knights of the river, for their pertinacity in preying upon travellers. Approached from either down or up-stream, Aggstein, perched on the summit of a thickly wooded hill about six hundred feet above the water, and backed by higher hills, also densely timbered, is strikingly impressive, while from its extensive ruins is to be obtained a view that for beauty will vie with any of those we have seen.

The ruins, which are attained by paths up through the wood, form—and justly—one of the most celebrated bits on the river; and it is only fitting that to such a place should be attached romantic and grim stories. The place must have been veritably impregnable in the days when its owners lorded it over this stretch of the Danube and took their toll of all passing boats. If all the strongholds of robber knights were “flourishing” contemporaneously, it is wonderful how any boat ever completed its journey.

Two at least of the lords of Aggstein seem to have come to a well-deserved end. One of these, Schreckenwald, who flourished in the fifteenth century is proverbially immortalized in an Austrian saying which describes those who are in a hopeless plight as being “in Schreckenwald’s rose-garden.”

The worthy whose name is thus remembered is said to have been not only the most expert but also the most unscrupulous robber-knight of his day, and to have been the terror of the surrounding country. When he had despoiled his prisoners of all that they possessed he would have them brought into his presence and dropped through a trap-door into what he playfully termed his “rose garden.” This was a dungeon, or enclosed ravine in the rock on which the castle was built, and those who were not killed by the fall were left to die of starvation or cold. How many victims he thus murdered is not recorded, but they are said to have been many—and of the number dropped into the “rose garden” but one escaped. A youthful knight of the neighbourhood, having been dismounted in a skirmish with some of Schreckenwald’s henchmen, was borne to the castle before the robber tyrant. It is said that to Schreckenwald’s enmity towards any captive was, in this case, added jealousy, for the knight had won favour in the eyes of a lady who had rejected the baron’s advances; the young man was therefore promptly sentenced to the “rose garden,” and the sentence as promptly carried out.

Conscious of a good deed accomplished in the removal of a rival, and grateful to his retainers, the baron gave up that day and the next to an orgy. At the close of the second day the inhabitants of the castle, deeming themselves in their usual state of security, retired to rest that they might be ready to start on some fresh foray in the morning. They little knew that retribution was nigh. Suddenly the blaring of bugles and the clashing of arms sounded, and the astonished baron found himself confronted in the torchlight by what he imagined must be the apparition of his latest victim. For a moment he was dumbfounded, but only for a moment; rushing forward sword in hand he shouted. “Wert thou the Archfiend himself, Schreckenwald shall still be lord of Aggstein.” The ferocity of despair availed him not; he was disarmed and promptly hanged in his own entrance hall, while his robber band of retainers was destroyed, some of the men being killed in the fighting and others driven over the battlements to destruction on the rocks below.

Another baron, seemingly a worthy predecessor of Schreckenwald, was Hadmar the “Hound of Kuenring,” who in the early part of the thirteenth century was lord of Aggstein (and of Durrenstein also). This robber-chief, in alliance with his brother, made Aggstein terrible, ravaging the country round, and being in all ways a law unto themselves. They became known as “The Hounds,” and long successfully defied all efforts to subdue them. At length, in 1231, a merchant who had already suffered much at the hands of the robbers, proposed to the Emperor that he should be permitted to employ a trick. “I will freight,” said he, “a vessel at Ratisbon, laden with the most costly merchandise: the tidings will soon reach the robbers at Aggstein. Thirty stout knights shall lie concealed in the vessel, and when Hadmar rushes down from his castle, and boards us with a few of his vassals, thinking to plunder some peaceable merchants, the knights shall rush out upon, and overpower him, while I push off from the shore.” Force having failed, the Emperor was quite willing that the stratagem should be tried, and the merchant duly set out as arranged. “Long before he had passed the Strudel, however, the welcome news of a very rich prize being on the water was told in the castle of Aggstein; and no sooner was the barge in sight, than the tower-bell, as usual, proclaimed the approach of booty. The baron, attended by a few choice vassals, pounced at once upon the expected prey, and was received on board with tokens of the most abject submission. ‘What is thy cargo, knave?’ said he to the merchant. ‘Silk, brocade, and wine,’ answered the merchant—‘with,’ but here he hesitated. ‘With what?’ interposed the baron sternly; ‘speak on thy life!’ ‘With a cask or two of specie for the Duke’s treasury,’ said the merchant in a half whisper. ‘Specie! the very thing we want,’ roared the baron. ‘Hand up the metal, instantly.’ ‘The metal for the baron—instantly!’ cried the merchant, and suddenly throwing back the canvas, thirty glittering lances were levelled at the baron’s breast. ‘There is thy metal, Herr Baron,’ said the skipper, pointing to the thirty mailed warriors who instantly surrounded him and his suite. The surprise and consternation of the tyrant may be imagined, but cannot be described. He was immediately secured and committed to the hold; and never did barge anchor under the walls of Vienna with more welcome news than when it was noised abroad that the Robber-Chief, Hadmar of Aggstein, was a prisoner on board.”

From the lofty ruins with their sinister memories we pass on through the continuously beautiful Wachau with its steep, wooded mountains on the right, its lower hills on the left, on the sides of which many vineyards soon become familiar. Several small villages are passed, and beyond Schwallenbach on the left we see an extraordinary piece of rocky formation running in wall-like fashion down the face of a hillside to the river. Softer rock has been worn away until the ridge remains very much like a roughly made wall built of irregular-sized blocks of stone—like one of our west-country stone field-walls exaggerated to a gigantic extent. It is little wonder that local lore has ascribed to this ridge a demoniac origin. It is known as the Teufelsmauer, or Devil’s Wall, but why the Devil concerned himself in erecting it I have not been able to ascertain further than the suggestion that he had taken it into his head to block up the Danube at this spot, but by some special intervention of Providence was stopped before the undertaking had got beyond the building of this wall. Where, for the new railway, a path has been blasted along the rock here, the lower end of the wall has been left intact by tunnelling through it. The first stopping place for the steamer after leaving Aggsbach is Spitz, a small town lying about the foot of a conical hill, scored to the top with vineyard lines, with vineyards extending also up the neighbouring hills, while on the mountain-side above it are the picturesque ruins of an old castle.