That's quite beautiful. Nice job on the architectue.
However, I'm not a fan of your water features. I think you should use smaller fountains around the canvas gazebo, because those large ones would spray water all over the pathway. Also, I've never seen a fountain come from within a flower bed, not that it's ugly, just something to think about. And, the black fences (around the water) look kind of bad.
Other than that, it looks like you have a solid park in the works!
BTW, In screen 3 it looks like you're missing windows on the building in the middle.