I first visited Harbor Island Park in Mamaroneck for the 4th of July fireworks festivities last year. They were the best and longest display I've ever seen, and will probably ever see. I was extremely impressed with the size of the park, the marina at the end, and the sheer number of people relaxing on blankets taking it all in. What a great park! If you live in the area, or plan to spend any time there, check it out.