While other cities in the United States are shrinking, the world's largest retirement community - The Villages - is booming. Completely devoid of crime, traffic, pollution, as well as children, the fastest growing metropolitan area in the country raises serious questions about the concentrated demographic's future infrastructural needs. After all, by 2050, the over-60 set is expected to almost triple to 2 billion. To learn more, check out this fascinating article on Bloomberg.
