Arriving at Viceroy Los Cabos (formerly Mar Adentro) is like getting a glimpse into the future of hospitality. Linked by a seemingly boundless plane of water, a series of minimalist white cubes—housing a rooftop bar, spa, world-class fitness center, movie theater, and more—rises from the desert landscape like a mirage, the work of Mexican architect Miguel Angel Aragonés. The view is memorable at Nido, a ceviche restaurant that sits under a nestlike dome of twigs. Equally striking are the 104 modernist guest rooms. Unlike the region’s traditional stucco and terra-cotta haciendas, they’re serenely spare, with floor-to-ceiling windows overlooking the Sea of Cortez and tablets that guests can use to create their own lighting concept.