An architectural style classifies buildings based on their distinct characteristics, including overall appearance, construction methods, materials, and regional traits. These styles are deeply connected to historical epochs (like the Renaissance), geographical locations, and broader artistic movements, often reflecting the prevailing societal attitudes of their era. The formal concept of "style" only emerged during the 18th-century Enlightenment, transforming how architectural history is understood and organized by recognizing each age's approach as equally valid. While some architects debate its adequacy for contemporary design, architectural style remains a vital historical tool, particularly for interpreting buildings whose original purpose or creator might be lost. Styles evolve gradually from societal influences, with multiple styles often coexisting or new ones emerging as a rebellion against existing forms, continually spreading and adapting across regions.