Baden-Württemberg is a beautiful, diverse state and definitely worth a few days of your next visit to Germany. Here are four places to visit in the state whose motto is perhaps the best one:
"We can do anything. Except speak High German."
In Baden they speak Badisch and in Württemberg they speak Swabian. Swabian has its own variants, in particular on the Schwäbische Alp. To get a feel for the Swabian dialect, start off in Stuttgart, an easy connection through Delta anyway.
The capitol of Baden-Württemberg is Stuttgart. You can visit art museums, eat fantastic Swabian food (like the amazing noodle dish Spätzle), visit rock and classical concerts, like with the Internationale Bach-Akademie Stuttgart (full disclosure: I used to sing with them; die Akademie liegt mir am Herzen). Pick up a Butter-Brezel, known in Swabian as a “Butter-Brezle.” It's a fresh pretzel where the thickest part is cut open and smeared with butter. Just trust me on this one. You’ll never regret it.