The modern skyscraper would not be possible without the use of aluminum. With aluminum’s durability, high strength-to-weight ratio, design flexibility and contributions to energy savings, it is the material of choice for architects and designers. In fact, there are many things in buildings that are made from aluminum including door frames, window frames, siding, roofs, curtain walls and entire facades. Using aluminum in buildings can even help the structure qualify for green building status under LEED.