Brookfield Place NY (formerly the World Financial Center) often supports interesting art projects, and this year they started a new and very cool holiday light show that's scheduled to run until at least 2025-Luminaries, by stage and architectural designer David Rockwell's company. It's really beautiful, and they did a very nice job on it. It runs pre-programmed light shows and then also allows visitors to "make a wish" by putting sending a color out through the array by putting their hands on a white monolith and then releasing it. It's pretty cool. The New York Times has more here, and Live Design has some information here.
I have many writeups of holiday light displays here.