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Fort Constitution Historic Site

Contact Information

Route 1B, U.S. Coast Guard Station, New Castle, NH 03854
Phone: 6032713556 | Website
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Located on peninsula on corner of New Castle Island; overlooks Piscataqua River, Atlantic Ocean. State of NH gave the US Fort William & Mary in 1791. Renovations completed, renamed Fort Constitution; ruins are seen today. Picnicking on grounds.


  • Family Friendly
  • Water Front
  • Accessible

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