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Each building had a private freight elevator that connected each of the 33 floors of all four buildings to the storage and deliveries entrance on the ground floor. So as not to tip anyone off, the first few years were normal deliveries, but occasionally strange oblong crates would arrive at the service entrance. Such was the influence of each of the four corporations that none but the foolish would complain about the unusual size of the crates being delivered and transported to each of the 33 floors.
After a century of having completed all the internal miniature cities that now existed on each of the 33 floors, the addition of the moon's companion satellite caused colder temperatures to begin wreaking havoc on the earth. It was at this time that the internal cities began their secret life, in earnest. The residents hardly ever left their 33 floors. Only a few dignitaries would leave to meet with officials and to survey the ever advancing long-range winters that kept returning earlier and earlier each year. Before the final winter would descend on the capital of MarContinuo, the secret cities inside the four cylindrical towers were life-supporting as where the various types of aircraft that were positioned on the central levels of the 33 floors.
Before the last spring came, never to return, one night when the small satellite of the moon exploded, all of the sliding panels of the four cylinders surrounding the 33 floors slid open for the first and last time. All aircraft hastily departed before the tragedy of the satellite's explosion subsided and th
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Those that remained were amazed and disturbed that so much had taken place on those 33 floors. Since the eternal winter was almost upon them, it made very little difference what remained or had existed on those 33 floors. There would be nothing left if ever the eternal winter ended for the elements would have destroyed and rendered useless any technology and secret systems of survival that had once existed on each of the 33 floors.
The shadowy inhabitants of those 33 floors had planned this for thousands of years and were now heading to their final destination, the stars from which their ancestors had come.
Related tales: http://perfectfuturo.blogspot.com/2006/05/MarContinuo-cities-beneath-roads-of.html
http://perfectfuturo.blogspot.com/2006/05/cities-of-distant-future.html