Archaeological sites are locations where remnants of past human activity are preserved and studied. These sites can include anything from ancient cities to burial grounds, providing valuable insights into the lives of our ancestors. Notable examples include Machu Picchu in Peru and the Pyramids of Giza in Egypt. The study of these sites helps archaeologists understand cultural practices, social structures, and technological advancements of ancient civilizations. Excavations at these locations often reveal artifacts such as pottery, tools, and structures, which contribute to our knowledge of history and human development.