Conca di Viarenna, Navigation lock in Milan, Italy
The Conca di Viarenna consists of a stone basin with a water gate system designed to manage water level differences between canals.
Built between 1551 and 1558 by the Veneranda Fabbrica del Duomo, this lock replaced an earlier structure from 1439 during Spanish fortification works.
The lock contains a shrine with ducal decrees exempting boats carrying materials for Milan Cathedral construction from paying tolls.
The structure stands isolated from its original waterway system since the 1930s when the internal canals were covered with asphalt.
This navigation lock initiated the Italian phrase 'a ufo', referring to free passage, derived from 'Ad Usum Fabricae' marked on tax-exempt boats.
Location: Milan
GPS coordinates: 45.45587,9.17741
Latest update: March 3, 2025 17:51
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