EntityQ319379· pop 5· linked from 3 articlesIron TowerSign in to savewatch tower in Mainz, GermanyConnectionsFranceCountryGermanyCountryGermanEntityWorld War IIConceptsheepEntityMiddle AgesEntityRhineEntitygeographic coordinate systemEntityInternational Standard Book NumberEntityprisonEntityMainzEntityWayback MachineEntityFrederick BarbarossaEntitysandstoneEntityCarolingian dynastyEntityMerovingian dynastyEntityRomanesque artEntityRomanesque architectureEntityHoly Roman EmperorEntityHouse of HohenstaufenEntityCategoriesBuildings and structures in MainzTowers completed in the 13th centuryTowers completed in the 15th century