Copper

 

Copper is a metal element that is used in a wide variety of applications, including electrical wiring, cooking pots, roofing, and art.

The BC Legislature Buildings have roofs that are covered in copper. Over the years, the copper has developed a green patina.

Similarly, the Fairmont Hotel Vancouver also has a copper roof that has developed a patina.

The Statue of Liberty has also changed colour over the years.

Copper has also been used as a fancy ceiling material.