"The Goethe-Institut New York organizes and supports a wide range of international cultural exchange programs in close cooperation with partners and institutions in both the host countries and in Germany. These activities range from the arts and humanities through science and technology."
The Goethe Institute is probably one of the smallest museums in New York. It's a converted townhouse right across the street from the Met, and the gallery is actually only a part of the institute's functions. There is also a library, book center and program center for people interested in German language and culture. It will only take about a half an hour to see this free gallery, so there's no reason not to take a look in if you're interested. The staff is friendly and willing to help answer any questions.