I only really used Stuttgart as a base to do the Mercedes Benz and Porsche Factory Tours and Museums, and didn’t do a lot of sightseeing when I was there. I was a bit worn out from the weekend F1GP walking and the few destinations I was at before that. The weather was a bit iffy the one afternoon when I had time to do some so I only had a quick glance around the town. Stuttgart seems very much more of a German traditional city (older buildings, no skyscrapers) vs say Frankfurt which had big glass skyscrapers etc. I looked and found some of the old buildings/attractions but there wasn’t anything so amazing to go find and see. For completeness of the trip sake I’ve included this post here with a few pictures (I never did a post for Mannheim as I really didn’t get to see much there at all).
Rathaus
MarktHalle
MarktHalle
ICE Train