Happy National Lighthouse Day!
Let There Be Light! Wikipedia defines Lighthouse as such: A tower, building, or other type of structure designed to emit light from a system of lamps and lenses and to serve as a navigational aid for maritime pilots at sea or on inland waterways. Lighthouses mark dangerous coastlines, hazardous shoals, reefs, and safe entries to harbors; they also assist in aerial navigation. Once widely used, the number of [...]