The statue of Liberty is 151 foot tall. It depicts a woman who holds a book and also a torch which is high. It is located at New York harbor at its entrance. Apart from this, she is situated in Paris at Swan Ally Island and Paris’ Luxembourg Gardens. Signifying the liberty which enlightens the world, the Statue of Liberty was a gift from France to the U.S as a token of friendship. It was given for commemorating the independent America’s 100th anniversary. It is a symbol of peace, friendship between the nations of United States and France. The light of the torch shows the path of freedom to the people who are oppressed and lost around the world, giving the message of hope.

Made of copper, the Statue of Liberty is green or in technical terms verdigris, as its simple salts are of the blue-green color. The rain is acidic and it fades away the copper. It contains sulfuric acid which reacts with copper forming copper sulfide. The green color is beneath the copper. This is the phenomenon of chemical weathering or corrosion.

According to another theory of the oxidation in water, the original copper skin of the statue of liberty is subjected to the process of patination. This is because of metal and water undergoing a chemical reaction. Hydroxycarbonate is formed by the mixing of the copper atoms along with carbon, hydrogen and oxygen. Thus, the green color is due to oxidized copper. The color is known as the patina and its layer is 0.005 inch thick. Further corrosion of copper is prevented due to the presence of the patina. The acids in the rain are carbonic and nitric acids. The oxidation process is speeded up due to the presence of these acids.