I knew there was a travel bug exchange type cache at O'hare but I didn't
know about the one in Frankfurt. I'll have to check it out next time I
fly there. I'm assuming it's a little bit of a drive by the description
and a little bit too far to walk but maybe the cache owners will advise
you otherwise. Good luck in Germany and your other destinations.

BTW I speak fluent German in case someone else needs logs or cache
descriptions translated.

FroBro D-Dubs