I’m not sure if you have a car there but I’d take advantage of driving on the autobahn. I’d take all my pent up road rage from driving in the US and leave it out there. It would be fun to speed without getting a ticket. I know you’re looking to relax and it might not be very relaxing for the passenger but it could be a good experience. You should set up a camera and get some footage if you do. Enjoy the rest of your trip! P.S. my wife has visited there before so I had her chime in as well. :-)