The Twelve Angled Stone is a remarkable example of Inca craftsmanship located in the historic center of Cusco, Peru. This intricately shaped granite block is renowned for its twelve perfectly interlocking angles, which allow it to fit seamlessly into the surrounding wall of the Palace of Hatun Rumiyoc. The stone exemplifies the Inca's advanced masonry skills, as it is held together with precision without the use of mortar. Each angle was meticulously carved to ensure a perfect fit with adjacent stones, showcasing the Inca's architectural prowess and understanding of seismic-resistant construction. The Twelve Angled Stone remains a popular tourist attraction and symbol of the ingenuity and sophistication of the Inca Empire.