Lighthouse
Lighthouses have served as a navigational aid for seamen for hundreds of years. It was born from a tradition of setting fires on hilltops to guide ships; this led to fire-lit platforms, and eventually the lighthouse. Before the development of clearly defined ports, these lighted towers were used to mark entrances for ships. By the turn of the century, its function switched to serve as warning signals against shipping hazards, like reefs or rocks. Here are America‘s most wonderful of the bunch.
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