Private wine tasting for six adults at Vintner's Collective in Napa Valley.  Vintner's Collective is one of a kind in Napa Valley, a wine tasting room where eighteen of the most celebrated small wineries in Napa Valley rent space.  These wineries craft some the most sought after wines in the world.  The Vintner's Collective building was built in 1875, and is the oldest stone building in Napa.