The King of England owns one-sixth of the earth’s land surface
King Charles III owns more land than anyone else. He is also the King of 32 other countries and head of a Commonwealth of 54 countries in which a quarter of the world’s population lives. He is legal owner of about 6.6 billion acres of land equating to one-sixth of the earth’s land surface.
This is due to the historic prevalence of the British Empire. In 1920 the British Empire covered 13.7 million square miles, that’s about one quarter of the world’s total land area.
https://www.newstatesman.com/global-issues/2011/03/land-queen-world-australia
https://www.walesonline.co.uk/news/uk-news/how-much-money-charles-king-25026909