These are a few models I designed and made, some are more detailed than others. Some of these are re-creations of real buildings and others are imagined.
None of these were created for any specific purposes, but I've found that I really enjoy this sort of modeling and will hopefully continue to learn more / keep doing it in the future. My workflow for most of these begins right in CAD, which is not always the fastest or most flexible, so I would be interested in trying some more traditional modeling techniques.