In transit through Frankfurt in Jan. I had 14 hours 'to kill' so I spent 6 with Barbara. She picked me up at the airport with a driver and then toured the city - it was excellent as we saw churches, old Jewish cemeteries, and coffee shops. Then we drove to the countryside for a sumptuous lunch.....overall a great day with a guide who has deep knowledge of the history and anatomy of this changing metropolis. Barbara was just great !