What rivers provide boundaries for Manhattan, the most densely populated borough in New York City and the 111 Murray Street residential skyscraper located in Manhattan?
Manhattan: Manhattan ( , ) is the most densely populated borough of New York City, its economic and administrative center, and its historical birthplace. Manhattan:  The borough consists mostly of Manhattan Island, bounded by the Hudson, East, and Harlem rivers; several small adjacent islands; and Marble Hill, a small neighborhood now on the U.S. mainland, physically connected to the Bronx and separated from the rest of Manhattan by the Harlem River.
i don't know