Introduction Historical context The natural setting About the disoccupation when discovered Description of Machu Picchu Wayna Picchu and the temple of the moon Reconstructing the past The productive activities The population and the labor force Construction Engineering Agricultural technology Manufactured production The productive activities Agricultural technology ---------Select---------Production of landsand water regulation-------------------------Preservation, storageand importations-------------------------Astronomy andcalendar In Peru agriculture implies the need to combine strategies which come from different sources of knowledge. One of these is astronomy, which with using a calendar, permits appropriate management of agricultual cycles; another is the provision of flat lands for cultivation and the last is the technology of preparing agricultural products for conserving them and deferred use, which goes joined to the work of building warehousing installations.