About it says the first historian of Stadtberg Christian Franz Paullini in 1686:
"In the corner of the city lies a tower, in which a fine water art just below a mill so the water drives uphill into this tower, from then the city can have pleasurable water."
A guided tour can be booked:
Friedhelm Bracht, Tel. 02992-8981, Time approx. 1 ½ hrs.