A wine hotel worth the trip should do more than park you in front of a vineyard view. The best ones teach you why the wine tastes the way it does — whether that's harvesting with the crew in Argentina, sleeping above port cellars in Portugal, or soaking in the grape-seed treatments of the spa that invented vinotherapy. A new roundup from Condé Nast Traveler pulls together a dozen of the world's best, and the standout experiences go well beyond the tasting room.

In Argentina's Uco Valley, The Vines Resort & Spa sits inside 1,500 acres of privately owned vineyards, a project started in 2005 that lets would-be vintners from around the world make their own Malbec, Cabernet Franc and Torrontés. Visit between late February and April and you can join WineCamp: picking and hand-sorting grapes, tasting straight from the tanks, stomping barefoot, then eating an open-fire asado among the vines.

At Les Sources de Caudalie in Martillac, Bordeaux, wine literally becomes part of the wellness routine. Built on the Château Smith Haut Lafitte estate, it houses the world's first Vinothérapie Spa, which turns winemaking byproducts into treatments, alongside two-Michelin-starred dining at La Grand'Vigne.

California gets a look in with the Four Seasons Napa Valley in Calistoga, where Cabernet Sauvignon rows — first planted in 2001 — thread between the guest rooms. Guests tour Elusa Winery, taste barrel samples and bottle their own blend, then book dinner at Auro, Calistoga's only Michelin-starred restaurant.

In Tuscany, Rosewood Castiglion del Bosco occupies a nearly 5,000-acre Montalcino estate that has made Brunello since the early 1900s and was one of just 25 founding members of the Brunello consortium in 1967. Its 153 acres of Sangiovese are still farmed and vinified on site, a short walk from the suites and villas.

Further south in appeal but equally serious: Mont Rochelle in South Africa's Franschhoek Valley keeps things intimate with 26 rooms, free cellar tours and tastings, and occasional dinners led personally by winemaker Michael Langenhoven in a cellar dating to the 1850s. In Spain's Rioja Alavesa, Marqués de Riscal — founded 1858 and a pioneer of Bordeaux-style methods — now pairs its historic cellars with a Frank Gehry building topped in rippling titanium. A five-day winemaking masterclass follows a vintage from picking to blending, ending with 40 custom-labelled bottles shipped to your door, plus rare vintages and a 16-course dinner along the way.

Champagne rounds out the list at Royal Champagne Hotel & Spa in Champillon, perched above the UNESCO-listed Marne Valley hills. It doesn't make its own wine but opens doors to both grandes maisons and family growers, including a three-day programme built around Champagne's three grape varieties. There's also a "Champagne Please!" button in every room. Honestly, that alone might sell it.