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  1. Lighthouse - Wikipedia

    A lighthouse is a tower, building, or other type of physical structure designed to emit light from a system of lamps and lenses and to serve as a beacon for navigational aid for maritime pilots at …

  2. Lighthouse | Chrome for Developers

    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 …

  3. Sign in to Microsoft 365 Lighthouse

    Microsoft 365 Lighthouse helps managed service providers streamline customer management and scale services through a centralized portal.

  4. Lighthouse Friends

    Dec 24, 2025 · This site includes photographs, directions, histories, and GPS coordinates garnered while personally visiting every lighthouse in the United States and nearly every …

  5. Ohio Lighthouse Hopping | Ohio, The Heart of It All

    May 27, 2025 · Lighthouse lovers travel the nation seeking beautiful beacons – but in Ohio you don't have to go far to get up-close-and-personal with historic lights. Ohio's inland sea, Lake …

  6. Lighthouse | Definition, History, Equipment, & Facts | Britannica

    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 …

  7. Home | United States Lighthouse Society

    Dec 19, 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 …

  8. Lighthouse Facts | The Lighthouse Preservation Society

    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 …

  9. US-Lighthouses.com - The best source for lighthouse info

    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 …

  10. What are Lighthouses For? | Lighthouse NE

    At first glance, a lighthouse may seem like a simple tower with a bright light at the top—but in reality, it’s a carefully engineered system designed to deliver maximum visibility, reliability, and …