Peru packs more variety into one trip than almost anywhere in South America. You can eat at a world-ranked tasting menu in Lima at sea level on Monday, walk Inca stonework in Cusco at 3,400m on Wednesday, and stand above the cloud forest at Machu Picchu by the weekend. Beyond the headline circuit sit the floating reed islands of Lake Titicaca, the white-stone city of Arequipa under its volcanoes, and condors riding the thermals over Colca Canyon. Most first-timers underestimate the scale and the altitude, and try to cram the whole country into a week.
The thing first-timers underestimate most is the altitude. Flying from sea level straight to Cusco and then hiking the same day is how people lose their first two days to headaches and nausea. The fix is simple planning: ascend gradually, sleep low in the Sacred Valley first, and don't book anything strenuous for arrival day. The other friction points are logistical. Machu Picchu sells timed, capped tickets that go weeks ahead; the Inca Trail caps permits months ahead and closes every February; the dry and rainy seasons make a real difference to what you'll actually see.
This guide is the planning layer that sits above the day-by-day itineraries. Pick your gateway (almost everyone flies into Lima, then on to Cusco), match the season to what you want (May-September for the Andes and treks), and sequence your stops by altitude so your body has time to adjust. Do that and you'll spend your days in the ruins, markets, and mountain valleys you came for, not flat on a hotel bed waiting for a headache to pass.













