How to Conceptualize the Dilapidated State of Havana

I would like to suggest a thought experiment. What if every single person in a community had collectively decided to completely abandon their town in the 1960s without taking a thing with them, and for the ensuing 60 years no one set foot anywhere near there. Then, one year ago, the descendents of that diaspora returned to the community with little but the clothes on their backs and tried to make a life there without any of the modern conveniences of today.