The base of Battery Park is Clinton Castle. It was built in 1812. It was built in the middle of Hudson River. After reclamation, it became one with Manhattan Island. The reclamation part became Battery Park. The southernmost part of Battery Park is to go to the Statue of Liberty Wharf. Inside the castle is now the ticket office of the Goddess of Liberty cruise ship and online booking and ticket exchange, and there is an exhibition to introduce the history of the castle.