USA. California state. Napa valley. A group of visitors enter Robert Mondavi Winery, To Kalon Vineyard. View from main entrance to the Oakville vineyards and the Mayacamas hills. Robert Gerald Mondavi (June 18, 1913 – May 16, 2008) was a leading California vineyard operator whose technical improvements and marketing strategies brought worldwide recognition for the wines of the Napa Valley in California. 16.12.2014 © 2014 Didier Ruef