A Navigation Bar is a user interface element that helps visitors find their way around a website or application. It typically appears at the top or side of a page and contains links to the main sections, such as Home, About Us, Services, and Contact. This organized layout allows users to quickly access different parts of the site without confusion. Navigation bars can be horizontal or vertical and may include dropdown menus for additional options. They are essential for enhancing user experience, making it easier for users to locate information and navigate through the content efficiently.