The “Opificio delle Acque. Centro di documentazione delle acque di Bologna” is located inside a former tannery built straddling the Reno canal. The building currently houses the seat of Canali di Bologna, which gathers the Consortia of canals of Reno and Savena. These institutions are heirs of the ancient organizations that since the 13th century have governed over the artificial network of canals located in Bologna’s territory. The artificial system was realized to bring water to the medieval city of Bologna, which is located far away from natural watercourses. In fact the River Reno and the Stream Savena are positioned at a distance of about 6 km from the City Center.
Since the 12th century water has been deviated from both watercourses in order to supply the city for industrial purposes, generating energy for the machinery that made Bologna one of the richest cities in Europe. The artificial water system nowadays has become the main element to preserve the hydro geological balance of Bologna’s area, preventing the risk of flooding and granting water even in drought periods. Canali di Bologna decided to use part of its headquarters for an educational and documentary center in order to raise awareness of this water heritage and to avoid forgetting that Bologna was, and still is, a city of water. Inside the center the historical events of the former tannery are illustrated through the reconstruction of plants and machinery once used for the leather tanning process. In the central room a large water wheel has been reconstructed as it was in the 18th century, when it actioned a millstone that grinded gall and bark. In the same room a scale model of the building shows all the tools, the tanks and the materials helpful to the work phases. The underground floor houses traces and industrial artifacts telling the more recent history of the factory.
At the end of the 18th century the Rizzoli, Bologna’s Orthopedic Institute, asked for the right to install two turbines to generate power to fuel the very first X-ray rooms that operated in Italy, the plant worked until year 1926. The turbines are visible on the paving through round glass slabs. They currently stand as a rare evidence of our industrial heritage.