Chocolate, cheese, watches, and a stable economy—these are likely the first things that pop into your mind when you think of Switzerland. Perhaps they're quickly followed by visions of trains rolling through mountain passes, snow-lovers soaring down pristine ski and toboggan runs, and funiculars plying between lake shores and quaint hillside towns. Yes, the country's cuisine, crafts, and countryside are iconic, but Switzerland's many world-class spas are also worth weaving into a vacation itinerary. Thermal baths are, after all, a great way to cope with alpine temperatures or weary muscles after an epic hike or ski day. And just imagine getting your massage on a heated bed as you gaze over the snow-capped Alps beyond Lake Geneva. Oyster has visited more than 400 hotels throughout Switzerland, from Basel to Zermatt, and here are the ones with spas as magnificent as a high-altitude ride in an aerial cable car—or a rose-gold Rolex. Welcome to SwitZENland.