Sun City (1973)

Original title: La città del sole

1600, Southern Italy is under the Spanish Government. A few years before an attempt at rebellion, inspired by the preaching of the philosopher and monk Tommaso Campanella, is severely quelled by the Government. Tommaso Campanella, under the charge of the plot, is put into a prison in Naples and waits for the conclusion of an endless process. Throughout the Calabrian countries his name is wrapped up in legend, he becomes almost a myth. Someone believes he has escaped from prison and wanders about under a false name.