There’s something next-level about a stay at this high-altitude architectural marvel in the small Alpine hamlet of Vals in Switzerland. For one, the thermal baths are pretty spectacular, and secondly, if you book one of the penthouse suites, there’s a helicopter pick-up service included in your room rate. Each and every room looks out over the Swiss Alps, and in between deep sleep and slow mornings, days are filled in the coffee shop (it’s filled with cool design books) or the spa, built from 60,000 slabs of Vals quartzite. This is a grown-up overnighter for serious design junkies and those who like to spa hard.