Auction Napa Valley is the world's most prestigious charity wine event, hosted by Napa Valley Vintners over three days at Meadowood Napa Valley and the region's top wineries, drawing roughly 2,000 guests. Attendees are CEOs, collectors, and cultural icons, with guests traveling in from New York, California, and internationally from Hong Kong, Singapore, and Japan. Saturday's Live Auction Under the Oaks has raised totals of $25 million in a single afternoon, giving sponsors a rare, prestige-driven platform tied to philanthropy for healthcare, education, and housing.