Ludwig the Bavarian built Pfalzgrafenstein Castle, “the Pfalz,” on Falkenau Island in 1327. It served as a toll station until 1866 and is now a museum. Gutenfels Castle is in the background in the fortified town of Kaub.

Ludwig the Bavarian built Pfalzgrafenstein Castle, “the Pfalz,” on Falkenau Island in 1327. It served as a toll station until 1866 and is now a museum. Gutenfels Castle is in the background in the fortified town of Kaub.