Since the surprise handover of power in Cuba last week, the inhabitants have been spending much of their time with puzzled frowns and scratched brows as they try to fathom out the town planning alterations enacted by new President, Erno Rubik. Some tower block residents have found that they have to enter their building sideways via an outside door on the fifth floor, and then are still not sure whether their flat has moved again since they left for work that morning.