Island Rock is one of the best places for rock climbing on Long Island. Beginners to pros can be seen climbing the indoor passages, belayed by trained staff (who will give you plenty of encouragement if the heights scare you!). Walls are 30 feet high, and there are about 50 paths to climb. They even offer birthday parties for fearless children or corporate events (I've seen business types go climbing here on their lunch break!). Rates may get a little pricey (especially if you don't have your own belayer or equipment), but it's definitely a unique experience that everyone should try once!