Inside the Battery Park, the Castle Clinton highlights, a fort built before the 1812's war, by the Major DeWitt Clinton, it is now a national monument. In addition to having a small exhibit of history, several concerts are performed during the summer. the Castle is the place where the tickets for the Ferry to visit the Liberty and Ellis islands are sold. The story says that in this area, dozens of forts were built, all of them dedicated to defending the Port of New York at war time in the year of 1812, of which it is said that none of them had the opportunity to fire at the enemy. The greatest relevance of this place for immigrants was in the year of 1855, on which the place was leased to the State of New York and began to operate as an office for immigrant's attention, by which it was estimated than eight million people enter the United States. In the year 1896 the Castle Clinton is re-opened as the City's Aquarium, being one of the best attractions of the city until the year of 1941. During the summer, there are different free activities such as theater performances and concerts. For more information, visit the page http://www.nps.gov/cacl/planyourvisit/index.htm
