One of the greatest examples of Incan engineering is the citadel of Machu Picchu. This ancient city was built on a mountain ridge located 2,430 meters (7,970 ft) above sea level, with terraced fields for farming, a sophisticated irrigation system, and intricate stone structures that have withstood the test of time. The precision and skill demonstrated in the construction of Machu Picchu show the advanced engineering capabilities of the Incan civilization.
