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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. Sign in to Microsoft 365 Lighthouse

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

  3. 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 …

  4. 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 …

  5. 14 Must-See Lighthouses Around the U.S. - National Trust for …

    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 …

  6. 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 …

  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 …