Pemaquid Point Light
|Location||Pemaquid Point, entrance to Muscongus Bay, Bristol, Maine|
|Year first constructed||1827|
|Year first lit||1857 (current tower)|
|Construction||Rubble stone and concrete|
|Markings / pattern||white with black lantern|
|Focal height||79 feet (24 m)|
|Original lens||Fourth order Fresnel lens|
|Range||14 nautical miles (26 km; 16 mi)|
|Characteristic||Flashing white 6 s|
Pemaquid Point Light
|Area||0.3 acres (0.12 ha)|
|Governing body||U.S. Coast Guard|
|NRHP Reference #||85000843|
|Added to NRHP||April 16, 1985|
The lighthouse was commissioned in 1827 by John Quincy Adams and built that year. Because of poor workmanship (salt water was used in the mortar mix), the lighthouse began to crumble and was replaced in 1835. The second contract for the construction stipulated that only fresh water be used. Keeper Isaac Dunham oversaw the construction and wrote in a letter to the US Lighthouse Establishment that the agreement was upheld and the work went well.
The original light was an Argand-Lewis parabolic reflector, lit with candles and with a visibility of 2 miles (3.2 km). Augustin Fresnel invented a superior way of focusing light in the early 1850s and most lighthouses in the US were converted to the Fresnel Lens, with Pemaquid Point receiving a fourth order Fresnel in 1856. The lens is one of only six Fresnel lenses still in service in Maine. The keeper's house was built in 1857.
Marcus A. Hanna, the only man ever awarded both the Medal of Honor (earned during Civil War for bravery on July 4, 1863 ) and the Gold Lifesaving Medal (for rescuing life on January 28, 1885 at Cape Elizabeth, once served as keeper of the light. The station was automated in 1934.
By popular vote of Maine residents, the lighthouse was chosen to be featured on the Maine quarter, the 23rd in the 50 State Quarters Program issued by the U.S. Mint. Also depicted is a 3-masted schooner intended to resemble the Victory Chimes. Exposed bedrock descends from the lighthouse to the ocean creating a unique, scenic landscape. The geological history of these formations dates back hundreds of millions of years. These imposing structures have made this lighthouse with its setting one of the most photographed on the Maine coast.
In addition to the image found on the state quarter, an image of Pemaquid Point lighthouse is featured as a possible background in Windows 7.
The lighthouse is owned by the U.S. Coast Guard and is licensed to the American Lighthouse Foundation.
The lighthouse was added to the National Register of Historic Places as Pemaquid Point Light on April 16, 1985, reference number 85000843.
Pemaquid Point Lighthouse Park
The Bristol Parks and Recreation Department operates the lighthouse and outbuildings as Pemaquid Point Lighthouse Park.
The keeper's house is now the Fishermen’s Museum at Pemaquid, which contains displays and artifacts of the lighthouse and local maritime history. Opened in 2008, the Learning Center is a community resource for offering movies, classes and concerts.
Other activities in the park include viewing the lighthouse, picnicking, and viewing local paintings at the Pemaquid Art Gallery.
Silurian Period sediments laid down 430 million years ago were metamorphosed underground into a gneiss 360-415 million years ago, and intruded by molten rock which cooled slowly, creating the park's exposed metamorphic gray rocks with dikes of harder, white igneous rock.  Underground heat and pressure tortured and folded the rock layers into the striking patterns that are now pounded and polished by the sea and rough weather.
List of Light Keepers
(Keeper; Date Appointed):
- Isaac Dunham: 3 November 1827
- Nathaniel Gammage, Jr.: 13 June 1837
- Robert Curtis: 31 July 1849
- Samuel C. Tibbetts: 9 April 1853
- John Fossett: 12 February 1858
- J. Lawler: 29 March 1861
- Marcus A. Hanna: 30 July 1869
- William L Sartell: 31 July 1873
- Charles A. Dolliver: 28 September 1883
- Clarence E. Marr: 16 August 1899
- Leroy S. Ewell: 1 July 1922
- Light List, Volume I, Atlantic Coast, St. Croix River, Maine to Shrewsbury River, New Jersey (PDF). Light List. United States Coast Guard. 2009. p. 45.
- "Historic Light Station Information and Photography: Maine". United States Coast Guard Historian's Office. 2009-08-08.
- "National Register Information System". National Register of Historic Places. National Park Service. 2009-03-13.
- "Classical Lenses in Operation" (PDF). US Coast Guard. 2009-08-06.
- "Medal of Honor Recipients". US Army. 2009-08-08.
- http://www.bristolparks.org/Learning%20Center.htm The Learning Center
- "Scenic Ledges at Pemaquid Point Lighthouse" (PDF). Maine Geological Survey. 2002-07-01.
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