Lower Manhattan, also known as Downtown Manhattan or Downtown New York, is the southernmost part of Manhattan, the central borough for business, culture, and government in New York City. 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 (also known as Upper New York Bay). The Lower Manhattan business district, known as the Financial District, forms the core of the area below Chambers Street.