In other words, Adelaide is the only 'free' state; it was not a settlement initiated by convicts. And yes, this makes the locals kind of boastful as belonging to the only settlement in Australia, which does not originate from convicts. Adelaide city was established as a capital in 1836 for 'free' British settlers. Hence, most of the settlers there had no criminal background. And this confidence resulted in no prison being built at the time of establishing the city. However, crime rates did soar, which meant a goal was eventually added.