The building is occasionally open to the public, most notably during Open House New York in October, and it is definitely worth the visit. Unlike so many other mansions in the area that have been almost completely gutted inside to make room for the ever expanding needs of the current occupants, the Institute was barely able to earn the minimum $150,000 needed per year to just maintain the building and as a result much of the original remains intact. The building was designated a National Landmark in 1978 and was only modestly restored in 1997.