Fort Constitution Historic Site Title 
Off NH Route 1B at US Coast Guard Station
25 Wentworth Road
New Castle, NH 03854
For further info: 603-436-1552
 

Historic Site   

Fort Constitution State Historic Site is located on a peninsula on the northeast corner of New Castle Island. It overlooks both the Piscataqua River and the Atlantic Ocean. The grounds provide a casual gathering spot for picnics. In 1791, the State of New Hampshire gave the United States the neck of land on which Fort William and Mary and a lighthouse were situated. The fort was repaired, renamed Fort Constitution and garrisoned with a company of United States artillery. Renovations, which included a wall twice as high as that of the colonial fort and new brick buildings, were completed in 1808. It is the ruins of this fort that are seen today. Park History.
 
Park Fees: This park is unstaffed but is open to the public year-round at no charge. Should an emergency arise during your visit, please call 911 for assistance.

Hours of Operation: Park is always open.

Are pets allowed at Fort Constitution Historic Site?

Pets are not permitted. See the
NH State Parks Pets Policy for more information.

Keep Your Parks Clean: Through the Carry-In/Carry-Out Program, you can help us keep your parks clean and beautiful by carrying out whatever you carry in.  Thank you for your cooperation and remember to recycle.
 
accessibility Access for Persons with Disabilities: Please contact the park office directly for information regarding disability access needs.