This document provides an overview of pre-historic architecture. During this time, before recorded history, humans constructed structures like earthen mounds, stone circles, and megaliths. Notable pre-historic architectural forms include Stonehenge, cliff dwellings, and structures made of materials like thatch and mud that have not survived. As humans transitioned to more settled agricultural societies around 9000 BC, they began constructing permanent villages and the first architecture emerged, made from available natural materials like animal skins, wood, and bones.