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FORTISSIMUS, “the strongest”, is a new concept developed in the heart of the Saint-Peter’s Mountain to discover the mysteries of Fort Eben-Emael. This impressive overhang, holding a real underground city, was once the mightiest Fort of Europe.  

This place became really famous trough history on May 10, 1940 when a small team of German paratroops took the control of the fort’s artillery in less than 15 minutes. Organization, innovation and risk taking were the keys to the German success. Come to FORTISSIMUS and discover the unbelievable adventure of the first moments of WWII. We will inform you about the secret German innovative plans and powerful weapons. 
 
Today, this gigantic complex is back to life. You will discover the kitchen, the bedrooms, the hospital, the hairdresser, the showers, and much more … as they were originally. More than 75 mannequins and special sound effects reconstitute the daily life in this surprising city. FORTISSIMUS is also a 75ha of protected nature area full of green plants, trees, mushrooms, and flowers to relax and enjoy great views. More than half of the territory consists of woods and is part of the St Pieters mountain protected park. Ideal for a healthy orientation walk.
 
FORTISSIMUS, “the game”, is a pleasant and exciting competition that will guide you through the maze. A fun place for the whole family, where you will learn an important page of European history. If you are in the Benelux, this place is a must for those who love history, architecture, culture, technology or nature.