The document provides observations from a trip through the Sacred Valley of the Incas in Peru. It describes visiting local markets where women wear colorful traditional dresses and corn is classified. It notes Inca infrastructure like stone streets with canals for drainage and figures on rooftops. Sites mentioned that show Inca agricultural innovations include Moray with circular terraces and Maras with salt mines still in operation. The document also references hiking along an Inca road above Pisac and seeing remains of an Inca citadel known for its stonework.