At Sacsayhuamán, I was mesmerized by the wall of stonework, a remarkable example of Inca engineering. The Incas employed advanced polygonal polished stone-masonry techniques to create these immense walls, fitting the stones together so perfectly that no mortar was needed. This level of precision and craftsmanship is among the finest I’ve ever seen. If you’re in Cusco, be sure to visit Calle Hatunrumiyoc to marvel at the famous 12-angle stone, a stunning example of Inca ingenuity.