Ancient mysteries refer to unexplained phenomena or artifacts from past civilizations that continue to intrigue researchers and historians. Examples include the construction of the Pyramids of Giza, the purpose of Stonehenge, and the disappearance of the Maya civilization. These mysteries often involve questions about the technology, culture, and beliefs of ancient peoples. Many ancient texts and structures hold secrets that have yet to be fully understood. The Nazca Lines in Peru, for instance, are enormous geoglyphs that can only be seen from the air, leading to speculation about their purpose. Similarly, the Sphinx of Giza raises questions about its origins and significance in ancient Egyptian society.