Historically, architectural plans have evolved as tools for organizing spatial ideas and ensuring the execution of construction projects. Early civilizations, such as the Mesopotamians and Egyptians, utilized primitive forms of architectural representation, often inscribed on clay tablets or carved into stone. These plans, primarily used for monumental structures like temples, pyramids, and palaces, served both practical and symbolic functions, reflecting cosmological and religious ideologies. The Greeks and Romans advanced these techniques, introducing proportional systems and geometric principles. Roman architect Vitruvius documented these methods in De Architectura, emphasizing harmony and utility. Such early practices laid the foundation for the systematic design methodologies that followed.