Ancient Roman architectural principles, Vitruvius' 3 principles, ornate columns, grand arches, symmetrical composition, harmonious proportions, rustic stone walls, marble floors, classical orders, Doric, Ionic, Corinthian, monumental structures, natural light, airy atmosphere, subtle shading, warm ambient lighting, Renaissance-inspired, historical context, ancient civilizations, Italian landscape, Tuscan countryside, cypress trees, rolling hills.