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Portland Observatory

Portland Observatory trip planner

POI's creator (Voyajo Team)

The Portland Observatory, built in 1807 at Portland, Maine, is the last surviving maritime signal tower in the United States. Using both a telescope and signal flags, two-way communication between ship and shore was possible several hours before an incoming vessel reached the docks. (...) (from Wikipedia)


      

Trip creator - stritthof2


 

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