A thin, cold light spills through the narrow stone streets of Cusco as your guide arrives to collect you — the city yawns awake beneath the high Andes. Over four days you move from cobbled colonial plazas into open highlands: the stepped terraces of the Sacred Valley, the steaming market stalls of Chinchero, the railway curve through cloud-wreathed ravines to Aguas Calientes, and finally the terraces and stonework of Machu Picchu at first light. The land here demands attention; winds shape the ridges, rivers push the valley floors, and the mountains keep their secrets.