The Rhine is lined with not only castle hotels but castle ruins and mighty fortresses. In fact, The Upper Valley of the Rhine has over 20 castles, most of which are open for touring.

14th century Pfalzgafenstein is located on a tiny island called Falkenau ... is one of the prettiest castles on the Rhine. I love a good castle ruin! Reichenburg is an impressive 14th century ...

Not all great adventures come with sprawling landscapes and endless borders. Some of the most fascinating places on Earth fit ...