A bridge is a structure that spans a physical obstacle, such as a river or a valley, connecting two points and allowing for the passage of people, vehicles, or other forms of transportation. It serves as a link between two areas, enabling easier access and facilitating communication and commerce. Bridges can vary in design and construction, ranging from simple beam bridges to complex suspension or cable-stayed bridges. They often showcase impressive architectural feats and engineering marvels, becoming iconic landmarks in many cities around the world.