Disney Pixar’s animated movie "Up" was the inspiration behind this n-gauge miniature. Carl's House was created from paper and according to the author took a few weekends to complete. It does amaze me the things you can create with paper. It is a shame that the template for this particular model is no longer available; however, there is a version of the model that comes with the balloons that can be downloaded here.
See the same model, but in 1/48 scale.