The Marksburg is a castle above the town of Braubach in Rhineland-Palatinate, Germany. It is one of the principal sites of the Rhine. The fortress was used for protection rather than as a residence for royal families. It has a striking example of a bergfried designed as a butter-churn tower. Of the 40 hill castles between Bingen am Rhein and Koblenz the Marksburg was one of only two which had never been destroyed (the other being Maus Castle) and at least the only one that had never fallen into disrepair.
El Marksburg es un castillo que se asienta sobre la colina que domina la ciudad de Braubach en el estado federal de Renania-Palatinado en Alemania. Es uno de los principales enclaves del Valle Superior del Medio Rin.
El uso de la fortaleza fue sobre todo defensivo y no tanto como residencia para familias reales. En la construcción destaca sobre todo la gran torre del homenaje (bergfried) que está coronada con una torre mantequera, una torre superior de diámetro inferior a la principal.