If I had a massive monetary fortune, like, the largest amount of money in the world...

I'd buy a large island and turn it into my own country. I'd wall the island off from the rest of the world and fill it with tricks, traps, and strange little buildings, towns suspended over cliffs, cities laid out by insane men, and then I'd discreetly kidnap people to populate this country.

The entire thing would be regulated by a sophisticated computer network from behind the scenes...