Within a minute or two the cube was hovering opposite the upper floor of the building the three had entered; and with only a foot of space separating the window of the sky-car and the dust-covered wall, the men from the earth inspected the interior at considerable length. They flashed a search-light all about the place, and concluded that it was the receiving-room, where the raw iron billets were brought via the elevator, and from there slid to the floor below. At one end, in exactly the same location as the desk Smith had destroyed, stood another, with a low and remarkably broad chair beside it. So far as could be seen, there were neither doors, window-panes, nor shutters through the structure. "To get all the light and air they could," guessed the doctor. "Perhaps that's why the buildings are all triangular; most wall surface in proportion to floor area, that way." A few hundred feet higher they began to look for prominent buildings. Only in forgetful moments did either of them scan the landscape for signs of life; they knew now that there could be none. "We ought to learn something there," the doctor said after a while, pointing out a particularly large, squat, irregularly built affair on the edge of the "business district." The architect, however, was in favor of an exceptionally large, high building in the isolated group previously noted in the "suburbs." But because it was nearer, they maneuvered first in the direction of the doctor's choice. The sky-car came to rest in a large plaza opposite what appeared to be the structure's main entrance. From their window the explorers saw that the squat effect was due only to the space the edifice covered; for it was an edifice, a full five stories high. The doctor was impatient to go. Smith was willing enough to stay behind; he was already joyously examining the strange machine he had found. Two minutes later Kinney, Van Emmon, and Jackson were standing before the portals of the great building. There they halted, and no wonder. The entire face of the building could now be seen to be covered with a mass of carvings; for the most part they were statues in bas relief. All were fantastic in the extreme, but whether purposely so or not, there was no way to tell. Certainly any such work on the part of an earthly artist would have branded him either as insane or as an incomprehensible genius.