Copper has played an important role in the design and architecture of all types of structures for thousands of years. In ancient Egypt, the massive doors to the temple of Amen-Re at Karnak were clad with copper. The 162-foot-tall, nine-story Loha Maha Paya temple built in the third century B.C. in Sri Lanka sparkled with copper roof shingles. Copper was an integral part of European medieval architecture and today, some 10,000 years after it was first discovered by mankind, architects and building designers are finding new and innovative ways to use copper in their designs.