This document provides an overview of architectural styles from prehistoric to medieval periods. It describes early megalithic structures like menhirs, dolmens, and cromlechs built from large stone blocks. Important sites mentioned include Stonehenge and Egyptian pyramids and temples aligned with astronomical events. Greek and Roman architectures featured temples with columns and civic structures like the Colosseum. Byzantine architecture advanced the dome style exemplified by Hagia Sophia, while Romanesque and Gothic styles used rounded and pointed arches, vaulting, and elaborate stonework on cathedrals.