This complex was built from 1867-1870, it was used during the french/Prussian war, during the 1st World War and the 2nd World War, on this complex, there also is a emission tower for radio and tv, which was erect 1953 and it is still in use. The military part of the complex hasn't been used since 1945, it was cleaned up after the 2nd World War but still remains Military Domain.
The entrance to the complex was pretty easy, but you have to run up some steep hills in order to arrive to the higher grounds. As you will see on the photos, there wasn't much to see, as all the rooms looked quiet the same and most of the floors have collapsed. Just as we entered one of the final rooms, we heard someone cough and some other person speaking, supposedly from where we entered previously.
Sadly, I couldn't manage to get there before the sunset, that's why the photos are pretty dark.