Oprah Winfrey –  $50 Million, California

The queen of empowerment and an ultimate feminine symbol, Oprah Winfrey knows how to make the best out of her billionaire bank account. Though she owns many estates around the country, her biggest one is her California Mansion worth an incredible $50 million. With her amazing taste and sense of decoration, it is estimated that the mansion is worth $165 million with probably the biggest home insurance cost in the zone.