Pescaia di San Niccolò, Medieval weir on Arno River, Florence, Italy
The Pescaia di San Niccolò extends across the Arno River, functioning as a water management structure with a system of barriers and channels.
Leonardo da Vinci documented this weir in his Codex Leicester, referring to it as the Giustizia weir near the old mint of Florence.
The structure supported numerous water-powered wool mills along the river banks, which formed the foundation of Florence's textile manufacturing industry.
The weir continues to regulate water flow in the Arno River, preventing flooding while maintaining consistent water levels for navigation.
The site includes remnants of the Isola dei Cocomeri, a former river island mentioned in historical documents that influenced local water management.
GPS coordinates: 43.76544,11.26712
Latest update: March 3, 2025 21:11
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