The Tiwanaku archaeological site is located near Lake Titicaca in western Bolivia. It was the center of the Tiwanaku civilization, which thrived from around 300 to 1000 AD. The site features impressive stone structures, including the Akapana Pyramid and the Gateway of the Sun, showcasing advanced engineering and architectural skills. Tiwanaku is recognized for its unique monolithic sculptures and intricate carvings, reflecting the culture and beliefs of its people. The site is a UNESCO World Heritage Site, attracting researchers and tourists interested in ancient civilizations and their contributions to history.