It is wholly impossible to describe the view which presented itself from this commanding point, both up and down the river, or to give any idea of the impression produced upon the minds of our travellers when they stood leaning over the balcony, and gazed down to the water below from the dizzy height. The pavilion is built of stone, and is secured in the most solid and substantial manner, being very far more perfect in its construction than the old towers and castles were, whose remains have stood upon these mountains so long. It will probably last, therefore, longer than they have, and perhaps to the very end of time.

It stands on a pinnacle of basaltic rock, which here projects so as actually to overhang its foundations.

The view both up and down the river is inconceivably beautiful and grand.

There was no seat in the pavilion, but there was one against the rocks, and under the shades of the trees just behind it; and here Mr. George and Rollo sat down to rest a while, after they had looked out from the pavilion itself as long as they desired.

"I believe I'll walk up the rest of the way," said Rollo, "and let the donkey stay where he is."

"Why, don't you like riding on the donkey?" asked Mr. George.

"Yes," said Rollo, "I like to ride, but he don't seem to like to carry me very well. Besides, it is not far now to the top."

The path immediately above the pavilion passed out of the region of the vineyards, and entered a little thicket of evergreen trees, through which it ascended by short zigzags, very steep, until at length it came out upon a smooth, grassy mound, which crowned the summit of the elevation; and here suddenly the ruin came into view. It was a single ruined arch, standing alone on the brink of the hill. The arch was evidently, when first built, of the plainest and rudest construction. The stones were of basalt, which is a volcanic rock, very permanent and durable in character, and as hard almost as iron. The mortar between the stones had crumbled away a good deal, but the stones themselves seemed unchanged. Mr. George struck his cane against them, and they returned a ringing sound, as if they had been made of metal.

Around this arch were the remains of the ancient wall of the building, by means of which it was easy to see that the whole edifice must have been of very small dimensions, and that it must have been originally constructed in a very rude manner. The arch seems to have been intended for a door or a window. Probably they took more pains with the construction of the arch than they did with the rest of the edifice, using larger and better stones for it, and stronger mortar; and this may be the reason why this part has stood so long, while the rest has fallen down and gone to decay. In fact, it is generally found that the arches of ancient edifices are the parts of the masonry which are the last to fall.

The opening in the arch looked down the river. Mr. George took his stand upon the line of the wall opposite the Island of Nonnenwerth, and said that he supposed there must have been another window there.