Arthur Clarke's best novel, in which he predicts the distant future of humanity. People always built cities until Diaspar was built. For thousands of years, its protective dome has shielded the city from the creeping decay and dangers of the outside world. Once he even restrained the forces that the stars obey. It was then, according to legend, that the Invaders drove the remnants of humanity into this last impregnable refuge. And now there is only one unique person who is able to escape from the suffocating comfort of Diaspar, abandon legends and discover the true nature of the Invaders.