There was Babylon and Nineveh; they were built of brick. Athens was gold marble columns. Rome was held up on broad arches of rubble. In Constantinople the minarets flame like great candles round the Golden Horn… Steel, glass, tile, concrete will be the materials of the skyscraper. Crammed on the narrow island the millionwindowed buildings will just glittering, pyramid on pyramid like the white cloudhead above a thunderstorm.