This document provides an overview of prehistoric architecture from the Paleolithic to Iron Age periods. It describes the evolution of dwellings from simple cave structures to stone and timber framed houses. Key dwelling types discussed include huts, lean-tos, tents, pit houses, longhouses, and brochs. Defensive structures like hill forts, palisades, and stone towers are also summarized. The document outlines changes in settlement patterns, construction materials, and the emergence of megalithic monuments and burial mounds over prehistoric times.