Guests at Grgich Hills Estate enjoyed a sip and some glorious sunshine on the patio. Photo by Jason Tinacci Napa Valley Vintners Published April 26, 2018 at 1500 × 1000 in Everything You Need to Know About the Napa Valley Wine Auction ← Previous Next → Guests at Grgich Hills Estate enjoyed a sip and some glorious sunshine on the patio. Photo by Jason Tinacci Napa Valley Vintners