Kingdom of Dixit
Suyash Dixit, a businessman from Indore learned about a piece of land in North Africa called Bir Tawil which is not claimed by any country. So what does he do? He went there and planted sunflower seeds, took a picture of himself holding up a flag that he had designed for the Kingdom of Dixit. He even applied to the United Nations for granting membership.
Is there a niche that you could own?
You might not have too many pieces of land left on earth that you can claim but what about a combination of skills or an unmet customer need?