There are more than 50 wineries in Napa Valley, and they all wish they could produce something as magical as Opus One. Created in 1984 in a collaborative effort between Robert Mondavi and Baron Philippe de Rothschild, Opus One is an indicative blend of five red-wine grapes. The grapes bring character to the wine in a way that cannot be replicated anywhere else. The price of this legendary Bordeaux-style red blend has risen 30.8 from 2017 to 2021.