The billionaire philanthropists Bill and Melinda Gates have purchased an exquisite beach house outside San Diego-splashing out on $43 million for an oceanfront mansion in the coastal town of Del Mar, CA. The prodigious purchase price makes it one of the largest sales in the area's history. The luxurious six-bedroom, four-bathroom, 5,800-square-foot home was sold to the Gates family by Madeleine Pickens, a former wife of the billionaire oil baron T. Boone Pickens, according to the Wall Street Journal. The home originally landed on the market for $48 million in January 2019. The oceanfront property was built by the architect...