The Morgan Library& Museum, formerly the Pierpont Morgan Library, is a museum and research library in the Murray Hill neighborhood of Manhattan in New York City. It is situated at 225 Madison Avenue, between 36th Street to the south and 37th Street to the north. The Morgan Library& Museum is composed of several structures. The main building was designed by Charles McKim of the firm of McKim, Mead and White, with an annex designed by Benjamin Wistar Morris.