Armstrong Hall is the building located on the northeast corner of the 112th street and Broadway intersection, i.e. the building above Tom's Restaurant. Armstrong houses the NASA Goddard Institute for Space Studies, the Center for Climate Systems Research, as well as offices for the Business School's Executive Education program. Philosopher John Dewey once had an apartment in the building.
According to Andrew Dolkart's "Morningside Heights", the building was originally known as the Ostend Apartments and later as the Oxford Residence Hotel. It was acquired by Columbia in 1965 and renamed Armstrong Hall.