I did get to take a small group of my students on a field trip to the installation today. It was pretty cool and was nicely done. Totally worth the time if you are in the area and can make it on a sunny day. Go soon as its only up a little while longer. The default image hole makes a fuzzy image but if you shape your hand into a rough O shape over the opening you can make the image much sharper. It would be perfect if someone made a pinhole for the covering and taped up a roll of paper inside and used it as a huge camera to capture the park and the flatiron building.