Curtain wall systems are an important part of high-rise building safety. When made with fire-resistant materials, like special glass and insulation, they help prevent fire from spreading, giving people more time to evacuate. These systems are carefully tested to ensure they can handle heat and smoke. With the right design, curtain walls can also improve energy efficiency and add to the building's overall look. Understanding how they work is key to making sure a building stays safe and compliant with fire safety regulations.