Spend at least 1–2 days adjusting to high altitudes in places like Cusco (3399m) before attempting strenuous treks like Rainbow Mountain .
The dry season (May to October) is ideal for trekking, while the shoulder months (May and October) offer fewer crowds and lush scenery. Lonely Planet Peru
Spend a night on the floating Uros islands made entirely of totora reeds on the world's highest navigable lake. Spend at least 1–2 days adjusting to high
Regions include Lima, the South Coast, Arequipa, Lake Titicaca, Cusco, the Sacred Valley, and the Amazon Basin. the South Coast