Caroline cried out softly and then choked back the cry, for the blackness was followed almost instantly by a flood of light.

The ship was diving down toward a city, a monstrous city that jerked Gary's breath away. A city that piled height on height, like gigantic steps, with soaring towers that pointed at them like Titan fingers. A solid, massive city of gleaming white stone and square, utilitarian lines, a city that covered mile on mile of land, so that one could see no part of the planet that bore it, the city stretching from horizon to horizon.

Three suns blazed in the sky; one white, two a misty blue, all three pouring out a flood of light and energy that, Gary realized, would have made Sol seem like a tiny candle.

Tommy's fingers flew over the rocket banks, setting up a braking pattern.

But even as he did, the speed of the ship seemed to slow, as if they were driving into a soft, but resistant cushion.

And in their brains rang a voice of command, a voice telling them to do nothing, that they and their ship would be brought down to the city in safety. Not so much like words as if each one of them had thought the very thought, as if each one of them knew exactly what to do.

Gary glanced at Caroline and saw her lips shape a single word. "Engineers.”

So it hadn't been a nightmare after all. There really were a people who called themselves the Cosmic Engineers. There really was a city.

The ship still plunged downward, but its speed was slowing and now Gary realized that when first they had seen this pile of stone beneath them they had been many miles away. In comparison to the city, they and their ship were tiny things… little things, like ants crawling in the shadow of a mountain.

Then they were within the city, or at least its upper portion. The ship flashed past a mighty spire of stone and swung into its shadow. Below them they saw new details of the city, winding streets and broad parkways and boulevards, like tiny ribbons fluttering in the distance. A city that could thrill one with its mere bigness. A city which would have put a thousand New Yorks to shame. A city that dwarfed even the most ambitious dreams of mankind.