Hello,
A friend and I will be arriving in Frankfurt Hahn airport in late November and will be making our way to Heidelberg. We would like to make some stops along the way, but want to go via public transportation rather than renting a car. Can anyone make any recommendations? We are interested in history, walking tours, castles, Christmas markets (if any are open that early), wine, etc. We have about 4 days to make this trip. Thanks in advance for any help!