Portsmouth Habor Lighthouse
Courtesy Friends of Portsmouth Harbor Lighthouse

Portsmouth Harbor Lighthouse

USCG Station Portsmouth Harbor
New Castle, NH

The only lighthouse on the mainland of New Hampshire, Portsmouth Harbor Light (also known as Fort Point Light, New Castle Light, and Fort Constitution Light) was constructed in 1877 on the grounds of Fort Constitution, a Revolutionary War fortification.

The lighthouse is open on select days in summer for open houses hosted by Friends of Portsmouth Harbor Lighthouses. See their website for a schedule.


Hours:See the Friends of Portsmouth Harbor Lighthouses web site for a schedule of open houses.