Have you ever visited the romantic Rhine valley? The area south of Koblenz is called with this catchy name. One reason for that was the moment when the “Mittelrheintal” (cenhtral Rhine valley) became UNESCO world heritage, and the local authorities try to make use of this very welcome award.
For a variety of historical reasone, the density of castles and palaces is extremly high in the romantic Rhine valley, some say it would top any other region in all over Europe. And it is difficult to find a place where there is no such historical building to see.