We saw castle after castle, vinyard after vinyard. They plant grapes on steep, terraced hillsides.
Many of the German castles were destroyed by France way before 1500. Some are ruins and some have been rebuilt.
One ruin has been purchased by a private party for a home in the last remaining tower. It was funny to see a driveway switchbacked up the side of the mountain... and satallite dishes and antenna about 1/2 way up the hill :-)
We docked at Mains in the early afternoon and went on a quickie walking tour. It's a lovely city of about 185K people. We visited a couple of old city center squares and one of the cathedrals we saw was spectacular. The painted ceilings were beautiful.
We visited the Gutenberg Museum and saw a demo of his printing process and one of his original bibles.
It was a good day.