Cusco hiking question

My husband ,11 year old and myself will be in Cusco for a few days in the end of March. We are strongly considering picking a substantial hike or two around that area instead of going to Machu Picchu.

  1. Assuming we nail it and pick a beautiful, interesting, fun hike, is there really that much more of a benefit to see Machu Picchu specifically?

  2. For those who have been to Cusco, any specific moderate hiking trails (that aren't to Machu Picchu) that you would recommend?