Portsmouth Harbor Light
Portsmouth Harbor Light, 1771 lighthouse in New Castle, US
The cast iron lighthouse rises 14.5 meters above Fort Constitution, featuring a fourth-order Fresnel lens that emits a steady green signal visible for 12 nautical miles.
In December 1774, Paul Revere warned Portsmouth of British plans to reinforce Fort William and Mary, leading colonists to raid the fort and seize supplies before the Revolution.
The Friends of Portsmouth Harbor Lighthouses organization maintains the structure and conducts educational programs about maritime navigation and coastal defense history.
The lighthouse stands at coordinates 43°4′15.7″N 70°42′30.9″W, marking the entrance to Portsmouth Harbor at the mouth of the Piscataqua River in New Hampshire.
The light signal transforms from white to green through a specialized acrylic cylinder enclosure, which helps vessels identify their position during nighttime navigation.
Location: New Castle
Inception: 1771
Height: 14.5 m
Made from material: cast iron
GPS coordinates: 43.07109,-70.70853
Latest update: March 6, 2025 02:10
New Hampshire reveals a land where the White Mountains have shaped the skyline for millennia. Between northern coniferous forests and southeastern Atlantic coasts, this New England state features waterfalls cascading over granite, glacial passes carved 15,000 years ago, and industrial villages embedded in red stone. Archaeological sites, lighthouses guiding ships on Piscataqua, and estates where early 20th-century artists shaped American identity await discovery. Trails wind through gorges, along lakes reflecting peaks, and through forests where remnants of old foundries remain. Autumn light illuminates maple trees, winter turns ravines into ice amphitheaters, and spring causes waterfalls to roar. From Mount Monadnock to the Shoals Islands, New Hampshire offers a varied geography where each hill, waterfall, and stone bears witness to a deeply rooted natural and human story within the landscape of New England.
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