Megalithic architecture refers to large stone structures built during prehistoric times, often using massive stones called megaliths. These structures were typically constructed for various purposes, including burial sites, religious ceremonies, and astronomical observations. Examples include Stonehenge in England and the Dolmens found in various parts of Europe and Asia. The construction techniques of megalithic architecture varied, but they often involved precise stone placement without the use of mortar. This method allowed for the creation of impressive structures that have stood the test of time. Megalithic sites provide valuable insights into the social and cultural practices of ancient civilizations.