I traveled to Peru in the beginning of February this past year. This was my first time in South America, so I had no idea what to expect. I traveled to Cusco for 7 days and to Lima for 3 days, which I believe was the perfect amount of time. Here are some things I believe everyone should be aware of before traveling to Peru. (This post mainly applies to the cities, Cusco and Lima).
1. Make sure you go to the Sacred Valley of the Incas, Lima, Machu Picchu, Inca trail to Machu Picchu, Plaza de Armas, Qorikancha (Temple of the Sun), Sacsayhuaman, and the Inca Museum.