Curtain walls are non-structural cladding systems for buildings, typically made of lightweight materials such as glass, aluminum, or metal panels. They are designed to resist air and water infiltration, withstand wind forces, and support their own weight. Curtain walls do not bear any structural load from the building other than their own, making them an excellent choice for modern high-rise buildings. They offer aesthetic flexibility, allowing architects to create visually appealing facades while providing natural light and thermal efficiency.