Structures are physical frameworks or objects that are designed to support loads, provide stability, and serve specific functions. They can be found in both natural and human-made environments, ranging from the intricate web of a spider to massive skyscrapers and bridges. Effective structures combine strength, stability, and functionality to ensure they can handle forces such as weight, pressure, or wind without collapsing. Their design often incorporates geometric shapes, like triangles and arches, to maximize efficiency and durability.