impressive stone structures, such as the renowned Machu Picchu. These structures were built without the use of mortar, showcasing the advanced engineering skills of the Incan people. In addition to Machu Picchu, the Inca also built other notable structures such as the Sacsayhuamán fortress in Cusco and the Ollantaytambo fortress in the Sacred Valley. These architectural achievements continue to fascinate and inspire visitors from around the world.
