This looks very cool and I can't wait to check it out in August when I am back in NYC. I happen to love waterfalls and fountains.
Link to the site (seems to be a little slow, very flash HEAVY):
http://www.nycwaterfalls.org (copy and paste—for some reason my links aren't showing up)
NY Times article & review:
http://www.nytimes.com/2008/06/27/arts/design/27wate.html?_r=1&ref=arts&oref=slogin (copy and paste—for some reason my links aren't showing up)