The fort is named after the Austrian fortress commander Baron Adam Sigmund von Thüngen and was laid out in 1732 around the "Redoute du Parc" defensive structure built by Vauban about 50 years earlier . It was surrounded by a deep ditch and could be reached from Fort Obergrünewald through a 169 m long underground rock ditch . In 1836 the fort was expanded by the Prussians and reinforced again in 1860. It was then demolished between 1870 and 1874. Only the three round towers, the roof peaks of which are decorated with oversized representations of acorns (hence the name), and the foundation walls of the fort, which were exposed again in 1991, have been preserved.
In the 1990s, the fort's outer walls were completely reconstructed. Ieoh Ming Pei's plans for the Musée d'Art Moderne Grand-Duc Jean (Museum of Modern Art) envisaged an integration of the fort into the museum building. The citizens' initiative Fanger wech vun den Dräi Eechelen successfully prevented this.
The opening of the Luxembourg Fortress Museum dragged on for years. The not entirely undisputed project was not completed for a long time due to planning errors in the financing. The opening finally took place in July 2012.
Fort Thüngen is located on the slope of the Kirchberg in Parc Dräi Eechelen . From here there is an unusual view of the capital of the Grand Duchy , especially of the Pfaffenthal and Clausen districts deep in the valley of the Alzette , and of the Corniche opposite .
- Elsa Küntziger: Le Musée de la forteresse ", une rénovation respectueuse et discrète. July 1, 2003. Tageblatt. Zeitung fir Lëtzebuerg , p. 31.
- Michel Pauly : The planned fortress museum - the wrong priority. (PDF; 146 kB) forum for politics, society and culture , July 1996.
- Dani Schumacher: A year of culture, but not a fortress museum. ( Memento of the original from November 17, 2008 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Luxemburger Wort , September 30, 2008. / "A rich culture makes a country rich". Octavie Modert sur la relation entre budget et culture et la situation relative au musée de la forteresse. ( Memento of the original from July 7, 2009 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. Interview, April 11, 2009.