No, Readers, the splendid Italianate castle you see in the picture here is not located in Tuscany or Lombardy but in Napa Valley, near the town of Calistoga. Castello di Amorosa, completed in 2007, is the pet project, nay, the total obsession, of Dario Sattui, who owns the well-known V. Sattui winery, retail store and picnic-ground farther south in St. Helena. The story of the planning and building of Castello di Amorosa is related in lavish detail on the winery’s website; yes, the setting may be elaborate and medieval, but Castello di Amorosa is a working winery; Brooks Painter is director of winemaking, a position he also holds a V. Sattui. And as is the case at V. Sattui, the wines are available only at the winery or by what’s still quaintly called “mail-order.” Not surprisingly, Amorosa focuses on Italian grape varieties but also on — our focus in this post — gewürztraminer, and if you’re thinking that gewürztraminer has about the same standing in Napa Valley that Lady Gaga holds at the National Academy of Kabuki-Acting Thoracic Surgeons, you would be correct. There are about 11 acres of gewürztraminer vines in Napa (total vineyard acreage about 43,000), which is why Amorosa has Gewürztraminer planted in cool-climate Mendocino County. These wines were samples for review. We move from dry to sweet.

The aromas of the Castello di Amorosa Gewürztraminer 2011, Anderson Valley, Mendocino, are frankly gorgeous; jasmine and honeysuckle, lychee and pear, quince and ginger, guava and passion fruit, with undertones of lime peel, limestone and grapefruit; a few moments in the glass bring in notes of “Evening in Paris” and lilac-scented face powder. Could the rest of the experience live up to this heady allure? Yes, actually, the wine — made in stainless steel as the others here are — displays admirable crispness and exuberant acidity, a suave, sleek texture, but lively and spicy, a burgeoning element of shale-and-flint-like minerality and, amid its apple and nectarine flavors, an overall crystalline existential glow. And it’s totally dry. 13.5 percent alcohol. Now through 2016 or ’18, well-stored. 1,100 cases. Excellent. About $23.

The Castello di Amorosa “Dolcino” Gewürztraminer 2011, Mendocino County, is, as its name indicates, a little sweet. The color is very pale straw-gold; notes of jasmine and honeysuckle are woven with ripe lychees and pears and hints of apples and apricots. No doubt about the sweetness on the entry, where flavors of softly roasted peaches mingle with touches of sage and baked apple, though the wine firms up nicely, under the influence of keen acidity that contributes freshness and moderate crispness to the texture. The wine, then, is lively and spicy, and the finish brings in a bit of grapefruit austerity. 12 percent alcohol. Good as an aperitif for those who like a touch of sweetness or with mildly spicy Indian or Southeast Asian cuisine. 1,849 cases. Very Good+. About $24.

The Castello di Amorosa Late Harvest Gewürztraminer 2011, Anderson Valley, Mendocino, is a full-fledged dessert wine that displays all the super-ripeness and golden honeyed slightly roasted stone fruit scents and flavors you could ask for. The color is pale gold; hints of baked apples and peaches, lychees, cloves and ginger snaps entice the nose before segueing into the mouth, where they’re enveloped by a texture that’s dense and almost viscous; the wine is even spicier on the palate, more honeyed, slightly buttery — think of lightly buttered cinnamon toast. Castello di Amorosa Late Harvest Gewürztraminer 2011 is rich, tasty and appealing, but it lacks just by a degree the essential tension and tautness that keep dessert wines on the straight and narrow path of clean, thirst-quenching acidity and scintillating intensity. 11.2 percent alcohol. 2,964 cases. Now through 2018 to 2022. Very Good+. About $35 for a 375 ml half-bottle.