This is the dirtiest place in the world.
Gallery » British Headquarters Map of New York, 1782
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British Headquarters Map of New York, 1782
Created by the British military in 1782 when they controlled New York City during the American Revolution, no other map of Manhattan Island from this era depicts so many natural features in such detail. The natural features include salt marshes, streams, hills, and woods — important obstacles to soldiers as they traveled the island.