We docked in Koblenz on our third full day with Viking River Cruises and had several choices of tours. One of the features I love with Viking is the ability to scope out all tours ahead of time and sign up for the “included tours” as you complete your personal form of registration. Kim was interested in the tour of the Marksburg Castle, but given my back issues I opted to remain on board and hopefully capture the magnificent homes, castles and other architectural interesting buildings on the Middle Rhine. She went ahead with the tour. I was glad I remained on board. As we sailed to Braubach, where Kim and the others would rejoin us. I noticed that there was a cable car running high above the confluence of the Rhine and Moselle rivers where we docked.