Cusco's stone streets, epitomized by the Qoriacancha palace and the church of Santo Domingo flank the Plaza de Armas. In this high-altitude melting pot of Amerindian and mestizo culture, you'll find extraordinary textiles, lively summer festivals and archaeological wonders. Incas deemed this spot the belly button of the world. Beyond lies the Sacred Valley, an Andean countryside dotted with villages, hamlets and ruins.