Platform City

In a desperate attempt to avoid too much scrutiny, the Cayman Islands pretends to be searching for oil. They build dozens of massive oil rig platforms under the pretense of having found massive reserves. They pretend to be surprised when the geologists "turn out to be wrong." Then they create an overseas territory and give it autonomy. This creates a new kind of state. Since the Caymans is an overseas territory of the UK, Platform City becomes and overseas territory of an overseas territory.
This proves to be sufficient to keep regulators and law enforcement off the scent of all the new money flowing through the new micro-state. Also, there are people with issues to work through about relationships, fame, peer pressure, religion and power politics. Sometimes the going gets a bit rough, and other times major conflicts are smoothed over. Whatever you're looking for, you might find it, or become disillusioned by it, if you hang out in Platform City long enough.