The Most Beautiful Castles in the Rhine River Valley

With almost 40 castles lining the riverbanks and teetering on the surrounding hilltops, it’s impossible to visit the Rhine River Valley without visiting at least one fairytale castle, and the medieval fortresses make up an important part of the Rhine Valley UNESCO World Heritage Site. From pretty riverside castles to sprawling hilltop fortresses, these are some of the most beautiful castles in the Rhine River Valley.