Sun City, Arizona, is home to more than 40,000 pensioners, with an average age of 73.5. No one who lives here is under 55. As a result, there are no children, and next to no crime and litter.
Residents never have to leave their gated community - everything they need is on their doorstep, from churches to supermarkets, healthcare services and hospitals. Originally from Minnesota, Lori and Bill Pearson bought their dream home in Sun City and have never looked back. These days, hundreds of thousands of senior citizens live in similar retirement communities across the US.