Doors are an essential element of any building, serving both functional and aesthetic purposes. They provide privacy, security, and help regulate the flow of people between spaces. Doors come in various materials, such as wood, metal, glass, and composite, each offering unique benefits. Modern designs focus on energy efficiency, soundproofing, and smart technology integration, enhancing both convenience and safety. Beyond their practical uses, doors also contribute to the overall style of interiors and exteriors, making them a key aspect of architectural design.