The official name of the Statue of Liberty is 'Liberty Enlightening The World'. It was a gift from France to the United States on June 19, 1885, and currently lies on Liberty Island between New Jersey and New York.
The structure was designed by Frederic Auguste Bartholdi. He started this mammoth project on a tiny scale out of clay to get his proportions, then he moved onto a far bigger sculpture, reaching a height of 2.4 metres and made out of plaster. Once he was done with that, he did another at a quarter of the scale of the real statue. These stages helped to perfect the fine details.
Finally, the full-size model was first made out of plaster, and in separate pieces to still fit inside the workshop. Once the individual pieces were moulded, large sheets of copper were used to cover the entire segments. Once completed, these individual pieces of copper would go on to become the outer frame of the Statue of Liberty. However, the copper sheets wouldn't be enough to support the mammoth statue, thus, a support structure and frame was erected and designed by Gustave Eiffel, the designer of the Eiffel Tower.
If you were to visit the Statue of Liberty on Liberty Island, you will enter the statue via the Pedestal lobby, then you'll have an option to either take the staircase or main elevator to climb up 7 floors, some with outside viewing decks. If you were to go up to the 7th floor, you would only be at the base of the Statue of Liberty.
With premium tickets, you will be allowed to go up further into the statue by means of a spiralling staircase, which will take you all the way up to the statue's crown, currently the highest point in the statue.
Previously, tourists could go up further into the torch but, due to previous damage and danger concerns, this area is now reserved only for maintenance access.
Take a look at the video below by the YouTube channel, Jared Owen, on What's Inside The Statue Of Liberty?