It was going to be the building of the century, the crowning glory of the Fidel Castro era. Financed with Soviet money, the first nuclear power plant in the Caribbean was to be built in Cuba, freeing the island from its energy crisis. But the megaproject was never finished. The planned 'Nuclear City' nearby is dilapidated and has been forgotten by the world. Bittersweet observations in a place that, in a time of nuclear phase-outs and energy industry turnarounds, has become a relict of a bygone age.