The Düsseldorf Castle Tower is located directly on the Rhine and is the only remnant of the former Düsseldorf Castle, which was destroyed in the great castle fire of 1872. The first three floors of the tower date back to the 13th century. The other two were added later. In 1883, a new portal was also added and a tent roof was built. The 33-metre-high tower was rebuilt inside in 2001 and is now home to the Maritime Museum. Also worth seeing is the weathervane of the Düsseldorf castle tower, the figure of which was created by the Düsseldorf sculptor Ferdi Walther to commemorate the castle fire in 1872.