Filter Your Results
- Cape Hatteras National Seashore (6)
- Boston Harbor Islands National Recreation Area (4)
- Apostle Islands National Lakeshore (3)
- Cabrillo National Monument (3)
- Golden Gate National Recreation Area (3)
- Isle Royale National Park (3)
- Biscayne National Park (2)
- Cape Cod National Seashore (2)
- Pictured Rocks National Lakeshore (2)
- Show More ...
Showing 38 results for fresnel ...
Fire Island National Seashore
Fire Island Light Station Fresnel Lens Building
- Type: Place
An exciting piece of history, this building houses the original first order Fresnel Lens which once illuminated the Fire Island Lighthouse
Indiana Dunes National Park
Harriet Colfax
- Type: Person
Born along the St. Lawrence River, determined Harriet Colfax found herself far upstream along the treacherous coast of Southern Lake Michigan after moving to a young Michigan City in 1853. For 43 careful years she watched the rough frontier city blossom to a Duneland metropolis; she fearlessly maintained the harbor beacon as lighthouse keeper while enduring the ensuing hardships with her lifelong companion Ann Hartwell.
Boston Harbor Islands National Recreation Area
The Graves
- Type: Place
The Graves are located in the outer northeast corner of the Boston Harbor at approximately 11 miles away from Boston. Rocky outcroppings surround the island, which are 15 feet above sea level at high tide. The Graves are not open to the public as they are privately owned.
Boston Harbor Islands National Recreation Area
Boston Light
- Type: Place
Since its original establishment in 1715, Boston Light has served as an integral beacon for Boston Harbor.
Keweenaw National Historical Park
Keweenaw County Historical Society
- Type: Place
Cape Cod National Seashore
Nauset Light
- Type: Place
Visit Nauset Light and learn more about lighthouse history!
Cape Cod National Seashore
Three Sisters Lighthouses
- Type: Place
Stop by the Three Sisters Lighthouses to learn more about lighthouse history on Cape Cod!
Golden Gate National Recreation Area
Point Bonita Lighthouse
- Type: Place
NOTE: There is limited cell service at the lighthouse. To use the app with partial functionality on-site, download the data to your phone ahead of time. To provide seafarers safe passage through the treacherous waters of the Golden Gate Strait, a network of lighthouses was built in the 1850s. The first light on Alcatraz illuminated the path for ships directly in front of Golden Gate, while the second light at Fort Point marked the bay's southern edge.
Sleeping Bear Dunes National Lakeshore
South Manitou Lighthouse Complex
- Type: Place
For nearly a century, lighthouse keepers kept a light burning at the top of this 104 foot tower to guide mariners through the dangerous Manitou Passage.
Boston Harbor Islands National Recreation Area
Graves Light
- Type: Place
The Graves are located in the outer northeast corner of the Boston Harbor at approximately 11 miles away from Boston. Rocky outcroppings surround the island. They sit at 15 feet above sea level at high tide, making them a dangerous peril to passing ships.
Pictured Rocks National Lakeshore
Au Sable Light Station Wayside
- Type: Place
Au Sable Light Station wayside. Located at the end of the Light Station Trail.
- Type: Article
The Fresnel lens (pronounced "Frey Nel"), as it came to be known, represented a monumental step forward in lighthouse lighting technology, and therefore also in maritime safety.
- Type: Place
Have you ever heard of a floating light house? For a moment in US history several of these mobile beacons guided ships for commercial, transportation, and military services. Learn more about lightships and the Lightship Chesapeake!
Cabrillo National Monument
Old Point Loma Lighthouse Assistant Keeper's Quarters
- Type: Place
Cabrillo National Monument
Old Point Loma Lighthouse Watch Room and Lantern Room
- Type: Place
- Type: Place
Starting in 1852, the United States government went lighthouse-crazy, funding the construction of 59 lighthouses along the California coast. At this early date, the Fort Point light was one of 13 serving the San Francisco Bay. The original light was built and destroyed in 1853. Army engineers blew up the bluff it stood on to make way for the construction of Fort Point. A second lighthouse, built near the water in 1855, was removed to permit seawall construction.
Cape Hatteras National Seashore
Hatteras Light Station Restortation Update- November 2023
- Type: Article
In November of 2023, work began in the lantern room to prepare for the fabrication of the replica Fresnel Lens.
Kalaupapa National Historical Park
Molokai Light
- Type: Place
For over one hundred years, the Molokai Light has shone over the people of Kalaupapa Peninsula. More than just a guide for ships, the lighthouse inspires the art, music, and daily lives of the people in Kalaupapa. Today, the Molokai Light is as iconic to the Kalaupapa Settlement as the towering sea cliffs.
Boston Harbor Islands National Recreation Area
Narrows (Bug) Light
- Type: Place
The Narrows Light once stood at the end of the Great Brewster Spit to light the entrance of the Narrows Channel. Designed by Harrison Loring, the light stood 35 feet above water and its wooden hexagonal structure had seven iron stilts, which resembled a large bug. This is why the light is sometimes called ‘Bug Light.’
Cabrillo National Monument
New Point Loma Lighthouse
- Type: Place
