Prehistoric monuments are structures built by ancient peoples before written records. These include stone circles, dolmens, and megaliths, which were often used for rituals or as burial sites. They provide insight into the social and cultural practices of early human societies. Many prehistoric monuments, like Stonehenge in England and Göbekli Tepe in Turkey, showcase advanced engineering and artistic skills. These sites are often aligned with celestial events, indicating that ancient people had a deep understanding of astronomy. Today, they are important archaeological sites that help us learn about our distant ancestors.