The Stephen A. Schwarzman Building is the flagship building in the New York Public Library system in the Midtown neighborhood of Manhattan in New York City. The branch, one of four research libraries in the library system, has nine divisions. Four stories of the structure are open to the public. The main entrance steps are at Fifth Avenue at its intersection with East 41st Street. As of 2015, the branch contains an estimated 2.5 million volumes in its stacks. The building was declared a National Historic Landmark, a National Register of Historic Places site, and a New York City designated landmark in the 1960s.