Cable-stayed structures are a type of bridge or building design that uses cables to support the main load. These cables are attached to tall towers, known as pylons, which help distribute the weight of the structure. This design allows for longer spans and can be more efficient than traditional beam bridges. The cables in cable-stayed structures are typically arranged in a fan-like pattern or in parallel lines. This configuration provides stability and strength, making them suitable for various applications, including bridges and towers. Their aesthetic appeal and engineering efficiency have made them popular in modern architecture.