The Castle Map atlas charts 22 castles, 3 fortresses, 6 palaces & châteaux and 8 ruins on the Middle Rhine. They span from c. 901 to 1828.
The best known is Ehrenbreitstein Fortress, #289 of 9,079 worldwide.
Where they are
Country pages: Germany.
Travelling rather than browsing? The Rhine castle route puts 32 of them in travel order, Bingen to Koblenz.
See them on the map →