Sacsayhuamán or Sacsayhuaman, Sacsahuaman, Saxahuaman, Saksaywaman, Saqsaywaman, Sasawaman, Saksawaman, Sacsahuayman, Sasaywaman or Saksaq Waman is a fort built by the Killke people in 1100 who have occupied the area since 900 at an altitude of 3,701 meters (12,142 ft) in Cusco, Peru.

Sacsayhuamán is the largest fortress ever built by American prehistory. The complex was expanded by the Inca Empire in the 1400s by building walls of large boulders on a platform built by the Killke people. The nation gives roots to the famous Inca craftsmen proficient in stone building techniques.

Xvlor Sacsayhuamán is the Killke nation ruins and expanded by Inca Empire Sacsayhuamán is the Killke nation ruins and expanded by Inca Empire

The site was built by the workers carefully cutting the stones to fit the platform without emblems. The structure is on a hill overlooking the city of Cuzco and has a great view of the valley to the southeast. Archaeological studies of the pottery collection in Sacsayhuamán show the earliest occupation of the hilltop is about 900 CE.

They are dragging large rocks using ropes to sites that sometimes require hundreds of people. The stones are formed into the final shape at the building site and then placed on the spot. Each village or ethnic group provides a certain number of individuals to participate in public works projects under the strict supervision of the Inca Empire architects.

Large plaza area can accommodate thousands of people and is well designed for ceremonial activities. The most famous Sacsayhuamán Zones include the main square and three large terrace walls that use the largest stones of all structures ever built in prehistoric America.

The stones are very tightly spaced and precision with rounded corners of interlinked blocks. The wall reaches a height of 18 meters arranged in a zig-zag style that extends along 540 meters where each wall has up to 40 segments. Estimated volumes of each andesite stone are over 6,000 cubic meters and the weight varies from 128 tonnes to nearly 200 tonnes.

Inca architects are very often trying to integrate the structure in the natural landscape surrounding it. Sacsayhuaman structures are also built similarly to mimic the towering mountain contours behind. When the sun creates a triangle shadow between the zigzagging zones in exactly the same way as the mountains with peaks and valleys.

After the siege of Cusco, the Spaniards began to use Sacsayhuamán as a rock source to build Cuzco Spain and within a few years they had separated and destroyed many of the complexes. This site was destroyed block by block to build government buildings and houses of the Spaniards.

On March 13, 2008, archaeologists discovered additional ruins on the outskirts of Sacsayhuamán believed to be built by the Killke culture. This nation built the structure and occupied the site for hundreds of years before the Inca, The stones were cut roughly at the mine site in the rocky river. Sacsayhuamán is the Killke nation ruins and expanded by Inca Empire

Xvlor Sacsayhuamán is the Killke nation ruins and expanded by Inca Empire

Location: Cusco, Peru.

Routes and public transport: Flights to Alejandro Velasco Astete International Airport in Cusco City.

Advice: Peru celebrates Inti Raymi is the annual Inca festival of the winter solstice and new year held near Sacsayhuamán on 24 June. The other annual festival is Warachikuy on the third Sunday of September. Some Cusco people use a large field inside the complex walls for jogging, tai chi, and other sports activities.