Romanesque vs Gothic, architectural styles, comparison, medieval period, Europe, stone buildings, grand cathedrals, ornate carvings, ribbed vaults, pointed arches, flying buttresses, stained glass windows, intricate sculptures, rose windows, clerestory, nave, apse, triforium, barrel vaults, groin vaults, columns, capitals, pilasters, cornices, towers, spires, façades, exterior, interior, day lighting, dramatic shadows, warm ambient light.