In José Ignacio, a quaint Uruguayan seaside town, South America’s first freestanding Skyspace by James Turrell recently opened. The installation, called Ta Khut—“the light,” in early Egyptian—sits inside the eight-bedroom, family-owned Posada Ayana hotel. Lapacho-wood sliding doors open onto a granite rotunda, where a circular white sphere reflects and refracts colored lights. Visiting times are at sunrise and sunset. Prepare for a meditative 45-minute light show. It’s most dazzling at sunrise, if you can manage it. But bring a sweater. —E.C.