If you have a free moment, take a stroll through Madison Park to experience the art installation by Teresita Fernández.  We happened to be in be area last night at dusk. I think the different times of day and different weather will inspire completely different experiences.  I love New York in the summertime.  There is always something to discover, even when you are not looking for it!  This was a wonderful art experience.  Highly recommend it!