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History of the town

Trezzo sull’Adda, in the province of Milan, is located in a place of great value: its landscape was the background to some of the paintings of Leonardo da Vinci and was mentioned by Alessandro Manzoni in “The Betrothed”. Next to Trezzo, there are the village of Crespi d’Adda, that is in the UNESCO World Heritage List, and the Adda Ecomuseum of Leonardo Da Vinci, who designed the pound locks of the river Adda and studied the artificial course of the Martesana waterway to allow boats coming from Lecco to reach the Darsena of Milan.
The history of Trezzo begins in 222 B.C. with a first roman settlement that lasted until the invasion by the Lombards in569 A.D. Between 1976 and 1978, among the valuable objects found in a Lombard necropolis in San Martino, there was one of the signet rings of “Rodchis”, which was then chosen and reproduced by the Lombardy Region as an honour to praiseworthy citizens of Lombardy.

The Taccani Hydroelectric Power Plant, built in Art Nouveau style, is located next to the imposing Visconti Castle, which witnessed a turbulent story of struggles and conquests, whose protagonists were Frederick Barbarossa, the Torrianis and the Viscontis. In 1385, it was in this mysterious place that Bernabò died, killed by his nephew Gian Galeazzo Visconti, Lord of Milan.
At Villa Gardenghi, the current seat of the “Alessandro Manzoni” public library, there is the endowment by the spouses Ada and Mario De Micheli, which includes books, paintings and drawings by the famous scholar of Milan. In addition to this heritage, there are several works of the Crivelli picture gallery, such as the "Oedipus at Colonus" by Giuseppe Bossi, curator of the Pinacoteca di Brera in Milan until 1815.
For these reasons, in 2002 the Lombardy region bestowed the title of "Art city of Lombardy" to Trezzo sull'Adda.

Trezzo sull'Adda is also the seat of the Parco Adda Nord (Northern Adda Park), belonging to the Adda Ecomuseum of Leonardo, the leading Municipality of the metropolitan centre “Adda and surroundings“ of the Province of Milan and is a member of the association “Castelli e ville aperte della Lombardia” (Castles and villas open in Lombardy). It takes part in the BIT - International tourism exchange in Milan and in the Tourism exchange of 100 Italian art cities, in Ferrara. 

On May 7, 2002, the Lombardy region bestowed the title of "Art city of Lombardy" to Trezzo sull'Adda. Initially, there were 300 cities of Lombardy, then they were reduced to 104 and finally the Lombardy Region chose only 80 cities, 18 in the Province of Milan.