Lower Manhattan is defined most commonly as the area delineated on the north by 14th Street, on the west by the Hudson River, on the east by the East River, and on the south by New York Harbor. The Lower Manhattan business district, known as the Financial District (FiDi), forms the main core of the area below Chambers Street. It is a leading global center for commerce, housing Wall Street, the New York Stock Exchange, and the Federal Reserve Bank of New York.