I've kind of designed my own way to organize all my builds. I start by creating different files in the save/load box, each one titled something like "City" or "Art" or something of the sort. Whenever I want to build something, I go to that file and build it there. So all my houses stay in one file, all my rides stay in another file, and so on. Although my favorite is Six Block, the amusement park. It's a park that just keeps growing and growing!!! 8D Anyway, I suggest some of you try it. I just got sick of making a new file each time for "House 1" and "House 2" etc.