M.D.
Hi V.,
I also have a three year old boy who, of course, is very active and I have two girls 5 and 7. They love to go to the Crossings in Colonie. I like it too, although it can get very crowded and very hot. But there is a lot of grass area to run and play ball. There are bike trails and a tree maze. If you want to try it out, it is on Albany-Shaker Rd.. If you are coming off the northway you would take that first exit to get onto Wolf Rd. and continue straight by the Time Union building. And it is at the next light, you will be able to see the sign. It really is a beutiful park. Good luck.
M.