A colossal £306 million mansion featuring 130 rooms ranks among the world's largest residential properties, yet remains cloaked in mystery. Constructed during the 1990s, the Mansao Safra, meaning Safra Mansion, stands as the 11th largest residence globally. The sprawling estate, situated in southern Sao Paulo, Brazil , exceeds the White House in size and is double that of Alvorada Palace, the Brazilian president's official residence. It covers an impressive 22,000 square metres with over 11,000