An astounding medieval structure complete with drawbridge and moat, chapel, stables, and secret passageways, the Castello commands Diamond Mountain's lower eastern slope. Some of the 107 rooms contain replicas of 13th-century frescoes (cheekily signed [the-artist's-name].com), and the dungeon has an actual iron maiden from Nuremberg, Germany. You must pay for a tour to see most of Dario Sattui's extensive eight-level property, though basic tastings include access to part
of the complex. Wines of note include several Italian-style wines, including La Castellana, a robust "super Tuscan" blend of cabernet sauvignon, Sangiovese, and merlot; and Il Barone, a praiseworthy cab made largely from Diamond Mountain grapes. The two-hour food-and-wine pairing ($72) by sommelier Mary Davidek is among the Wine Country's best.
4045 N. St. Helena Hwy./Hwy. 29, Calistoga, California, 94515, United States