The old water mill, bordered by the Geer river, is a special place. Located in a canalized dike with masonry walls from the bridge over the Geer, it was made vertical in the 20th century in the form of a large square brick tower, five stories high. The mill was then converted into a large flour mill with a horizontal wheel turbine adapted to the needs of industrialization. An inscription in the courtyard of the old mill states that the Oleye flour mill was founded in 1878. The main building dates from 1912. Until then, the flour mill of Lejeune provided work for many residents of the village. After 1925, the Lejeune family who managed the mill moved to the Meuse Valley. The buildings later housed a distillery (the Wiquet cooperative). Around 1980, Mr. Materne, a farmer in Mouhin, was expropriated by the highway works. He had a house built opposite the mill he bought to store his agricultural machinery. The outside of the buildings is decorated in various places with old agricultural equipment, all kinds of old objects, sayings and pieces of art in sometimes strange combinations - but always surprising.