Discovered near Nebra, Germany and dated to roughly 1600 BC, the Nebra Sky Disc is a bronze plate inlaid with gold symbols of the sun or full moon, a crescent, stars, and later-added arcs. It may encode horizon and calendar knowledge. It is also one of UNESCO’s Memory of the World documents.
Part of the Tiwanaku complex on Bolivia’s Altiplano, Puma Punku is a platform mound with shattered gateways and ultra-clean andesite cuts that fuel debate about tools, transport, and purpose. Dates cluster in the Middle Horizon, with new reconstructions and surveys still revising the picture.
Baalbek in Lebanon, the Roman Temple of Jupiter sits on a colossal podium that includes the famous Trilithon blocks. Nearby quarries hold even larger unfinished stones, including a 1,650-ton monolith discovered in 2014. The site blends bold engineering, layered religions, and enduring mystery
Stretched across Peru’s coastal desert, the Nazca Lines form massive geometric shapes and animals made by clearing dark stones to reveal pale earth. Built roughly 200 BCE to 600 CE, they still spark debate about purpose, meaning, and how they were organized
