The Statue of Liberty, officially titled Liberty Enlightening the World, dedicated on October 28, 1886, is a monument commemorating the centennial of the signing of the United States Declaration of Independence, given to the United States by the people of France to represent the friendship between the two countries established during the American Revolution. It represents a woman wearing a stola, a radiant crown and sandals, trampling a broken chain, carrying a torch in her raised right hand and a tabula ansata, where the date of the Declaration of Independence JULY IV MDCCLXXVI is inscribed, in her left arm. Standing on Liberty Island in New York Harbor, it welcomes visitors, immigrants, and returning Americans traveling by ship. Frederic Auguste Bartholdi sculpted the statue and obtained a U.S. patent for its structure. Maurice Koechlin—chief engineer of Gustave Eiffel's engineering company and designer of the Eiffel Tower—engineered the internal structure. The pedestal was designed by architect Richard Morris Hunt. Eugene Viollet-le-Duc was responsible for the choice of copper in the statue's construction, and for the adoption of the repousse technique, where a malleable metal is hammered on the reverse side.
The statue is made of a sheathing of pure copper, hung on a framework of steel (originally puddled iron) with the exception of the flame of the torch, which is coated in gold leaf (originally made of copper and later altered to hold glass panes). It stands atop a rectangular stonework pedestal with a foundation in the shape of an irregular eleven-pointed star. The statue is 151 ft (46 m) tall, but with the pedestal and foundation, it is 305 ft (93 m) tall.
Worldwide, the Statue of Liberty is one of the most recognizable icons of the United States. For many years it was one of the first glimpses of the United States for millions of immigrants and visitors after ocean voyages from around the world.