The Mainz Citadel is one of the most significant architectural monuments of the city and is one of the few still preserved modern citadels in Germany. Here, 2000 years of Mainz's city history can be explored in a compact area – from the Roman Theatre to the Luther Church of the 20th century.
Built in 1660 on the Jakobsberg, the citadel was a central part of the Mainz fortress. Its strategically advantageous location in the Holy Roman Empire gave it historical significance; later it was incorporated into the Grand Duchy of Hesse and expanded into a federal fortress. Despite multiple occupations and its use as a shelter during bombing raids, it remains one of the few preserved modern citadels in the Federal Republic today.
Today, the citadel houses municipal offices and serves as a vibrant cultural venue. In addition to the traditional Citadel Festival, the Christmas market, numerous concerts, and festivals are held here. The fortress also provides space for modern event formats such as the "Open Ear Festival," appealing to visitors of all ages.
Exciting tours – some in historical costumes – offer insights into the upper and underground pathways of the citadel. Further information and online tickets can be found at www.zitadelle-mainz.de/fuehrungen:
Centuries have left their marks: masonry, walls, and moats are partially threatened by plant growth. Since 2004, the initiative Zitadelle Mainz e.V. (IZM) has been committed to preserving the site. The non-profit, independent association advocates for an environmentally compatible restoration of the walls, the careful development of the citadel moat while considering monument and nature conservation, as well as the continued cultural use of the fortress.


