The "Kugelbrunnen" opens into full bloom in eight minutes.
In Aachen, water and technology are close companions. The artist Albert Sous from Würselen took this to heart in 1977, and constructed a fountain from old washing machine drums which is made to move by a hydraulic system which is purely mechanically operated using water pressure. In just a few minutes, the ball becomes a large flower, creating an unusual work of art in the middle of the inner city. It can be found in front of the Aquis Plaza.