Technically, no one owns any land. Governments own lands, and they are able to limit people from what they can do with it, and they can regulate how it’s done. In the American legal system, for example, people only own the rights to land, not the land itself.

That said, to answer your question, most property ownership laws are based on the Latin doctrine, “For whoever owns the soil, it is theirs up to heaven and down to hell.”