37 total votes
Harbor Island

Harbor Island

Harbor Island is an artificial island in the mouth of Seattle, Washington's Duwamish River where it empties into Elliott Bay. Built by the Puget Sound Bridge and Dredging Company, Harbor Island was completed in 1909 and was then the largest artificial island in the world, at 350 acres. Since 1912, the island has been used for commercial and industrial activities, including secondary lead smelting, shipbuilding and repair, bulk petroleum storage, metal fabricat...

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