I'm showing my lack of knowledge here, I saved the park with the save to library, like I did with the house and sim I want to keep.
When I go to edit town, and go to the buy/build mode, it has community buildings; where the basement, selections for ground, the different trees/flowers and such. In the buildings sections, it has the arbor, but I don't see the park grounds anywhere.
The park is 64 by 35, I think; it will easily fit onto a 64 by 64 lot, which I have set aside for the park.
So, what am I missing here?