Forts

• Castle Clinton
  • http://www.nps.gov/cacl/index.htm
  • Castle Clinton or Fort Clinton was once a circular sandstone fort now located in Battery Park at the southern tip of Manhattan Island, New York City, in the United States. It subsequently became a beer garden, an exhibition hall, a theater, the first immigration station (predating Ellis Island), a very popular public aquarium, and finally a national monument.
    • Source:  http://en.wikipedia.org/wiki/Castle_Clinton