Based on the following passage, why might an architect choose to use a curtain wall? Office buildings and high-rises often include a curtain wall of glass, which requires advanced systems of fastening glass plates together. In a building with a curtain wall, the covering of the building does not serve a structural purpose; it is simply a façade that keeps out the elements. A curtain wall can be made of a number of different materials, such as aluminum, stone veneer, or glass.