Now open to the public, the Marchesi Antinori Chianti Classico Cellar, located about 30 minutes from Florence, is a modern-day tribute to the family-owned winery’s 625 years and 26 generations of winemaking. The new 67,000-square-foot facility, the development of which began in 2005, includes a restaurant, an auditorium, a wine shop, a library, and a visitors’ center (tours start at $27), all designed by the architect Marco Casamonti of Archea Associati. From the exterior, the structure blends unobtrusively in…