The Federal Reserve Building has fourteen above-ground stories and five basement levels, designed by York and Sawyer with decorative ironwork by Samuel Yellin of Philadelphia. Its facade is separated horizontally into three sections: a base, midsection, and top section. The stone exterior is reminiscent of early Italian Renaissance palaces such as Florence's Palazzo Strozzi and Palazzo Vecchio. The horizontal and vertical joints of the facade's stones are deeply rusticated. The Federal Reserve Building's gold vault rests on Manhattan's bedrock, below street level and below sea level. The vault contains the largest known monetary-gold reserve in the world, with about in storage .