A tube structure is a type of architectural design characterized by its hollow, cylindrical shape. This design is often used in buildings and bridges to provide strength while minimizing material use. The tube shape allows for efficient load distribution, making it ideal for tall structures that need to withstand various forces, such as wind and gravity. In engineering, tube structures can be made from materials like steel or reinforced concrete. They are commonly seen in modern skyscrapers and large-scale constructions, where their ability to support significant weight and resist bending is crucial. Examples include the Burj Khalifa and the Willis Tower.