This amazing Incan site is just outside of Cuzco. The fortress was built during the reign of Pachacuti (1438-1471 CE) and his successors. That the massive walls are still standing after all these years highlights the skills of Inca architects and engineers. You'll get to visit this site on our 20 day Best of South America tour. https://www.evergreentours.com.au/tour/best-of-south-america/5354