The Tower of Hercules lighthouse in north-western Spain. Before the development of clearly defined ports, mariners were guided by fires built on hilltops. Since elevating the fire

Lighthouse, structure, usually with a tower, built onshore or on the seabed to serve as an aid to maritime coastal navigation, warning mariners of hazards, establishing their position, and …

Lighthouses are built from wood, stone, brick, reinforced concrete, iron, steel, or aluminum. They are designed to withstand local environmental conditions. For example, tall skeletal …

According to Homeric legend, Palamedes of Nafplio invented the first lighthouse, although they are certainly attested with the Lighthouse of Alexandria (designed and constructed by …

Lighthouse has audits for performance, accessibility, progressive web apps, SEO, and more. You can run Lighthouse against any web page, public or requiring authentication. You can run …

Enjoy this handy guide featuring 14 of our favorite lighthouses in the U.S. Want even more great lighthouses? Check out this guide showcasing lighthouses from the Great Lakes to the Gulf …

Dec 16, 2025 · This site includes photographs, directions, histories, and GPS coordinates garnered while personally visiting every lighthouse in the United States and nearly every …

Dec 5, 2025 · The United States Lighthouse Society is a nonprofit historical and educational organization dedicated to saving and sharing the rich maritime legacy of American lighthouses …

What is a lighthouse? A lighthouse is loosely defined as a tower or other structure used to display a light for the guidance of ships to either avoid a dangerous area (shoals, etc.) or to identify a …

Feb 5, 2019 · Since the establishment of the first lighthouse in America in 1716 and construction of fire lookouts in the 19th century, lighthouses and lookouts have played a critical role in …