These might be features of large scale purpose-built scam centers, but there are myriad smaller centers occupying apartment blocks, whole floors of office tower

These might be features of large scale purpose-built scam centers, but there are myriad smaller centers occupying apartment blocks, whole floors of office towers, and of course ex-Casino buildings and so on. eg Cambodia is especially rife with these. There are so many recently-built apartment blocks that lie empty, often built with corrupt money anyway, they make easy and fairly low-key dens.