Along Mannheim

On the way back from Frankfurt I stopped in three cities before coming back to Freiburg im Breisgau: Mannheim, Karlsruhe, and Offenberg. The ticket is 37 Euro for taking as many (slow) trains as you want. It was 4 trains and 6 hours. At least I got to see some more of Baden-Wurttemberg. Always put a positive spin on things.
Something you might want to know about Mannheim (or maybe not) is that it's built like a North American city, into quadrants, very linear, and it all leads to a crazy ass palace.