The main entrance to the Morningside Heights campus of Columbia University, located in Manhattan in New York City, is at 116th and Broadway. The address you should use for a GPS device is 535 West 116th Street New York, New York 10027. Information on transportation is here.
A detailed map of the Morningside Heights campus is here.
You can read a brief history of Columbia, find statistical information about the University and also read a brief history of Columbia Physics.